Lincoln Navigator: Controller Area Network (CAN) Module Communications Network / Controller Area Network (CAN) Module Communications Network. Diagnosis and Testing

Lincoln Navigator 2018-2025 Workshop Manual / Electrical Distribution / Controller Area Network (CAN) Module Communications Network / Controller Area Network (CAN) Module Communications Network. Diagnosis and Testing

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Module	DTC	Description	Action
GWM	U0001:09	High Speed CAN Communication Bus: Component Failures	GO to Pinpoint Test AW
GWM	U0214:00	Lost Communication With Remote Function Actuation Module: No Sub Type Information	GO to Pinpoint Test AX
GWM	U1A01:00	Communication Link: No Sub Type Information	GO to Pinpoint Test AY
GWM	U2100:00	Initial Configuration Not Complete: No Sub Type Information	GO to Pinpoint Test AZ
GWM	U2200:00	Control Module Configuration Memory Corrupt: No Sub Type Information	GO to Pinpoint Test AZ
GWM	U3000:04	Control Module: System Internal Failures	GO to Pinpoint Test BA
GWM	U3000:43	Control Module: Special Memory Failure	GO to Pinpoint Test BA
GWM	U3000:49	Control Module: Internal Electronic Failure	GO to Pinpoint Test BA
GWM	U3000:57	Control Module: Invalid/Incompatible Software Component	GO to Pinpoint Test BB
GWM	U3003:16	Battery Voltage: Circuit Voltage Below Threshold	GO to Pinpoint Test BC
GWM	U3003:17	Battery Voltage: Circuit Voltage Above Threshold	GO to Pinpoint Test BD

Symptom Chart(s)

Symptom Chart: Communication Network

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

NOTE: Modules that communicate on a private CAN are diagnosed in the module's home section and are not included in this section.

Symptom Chart

Condition	Actions
The vehicle does not start with the diagnostic scan tool connected to the remote DLC and/or multiple malfunction indicators are only on when the diagnostic scan tool is connected to the remote DLC	GO to Pinpoint Test A
No power to the remote DLC	GO to Pinpoint Test A
No FD-CAN communication, all modules are not responding	GO to Pinpoint Test B
No HS-CAN1 communication, all modules are not responding	GO to Pinpoint Test C
No HS-CAN2 communication, all modules are not responding	GO to Pinpoint Test D
No HS-CAN3 communication, all modules are not responding	GO to Pinpoint Test E
No HS-CAN4 communication, all modules are not responding	GO to Pinpoint Test F
No MS-CAN communication, module is not responding	GO to Pinpoint Test G
All networks do not respond to the diagnostic scan tool	GO to Pinpoint Test H
The ABS module does not respond to the diagnostic scan tool	GO to Pinpoint Test I
The ACM (except China) does not respond to the diagnostic scan tool	GO to Pinpoint Test J
The APIM (SYNC4) does not respond to the diagnostic scan tool	GO to Pinpoint Test K
The APIM (SYNC+) does not respond to the diagnostic scan tool	GO to Pinpoint Test L
The ATCM does not respond to the diagnostic scan tool	GO to Pinpoint Test M
The BCM does not respond to the diagnostic scan tool	GO to Pinpoint Test N
The BCMC [ BJB ] does not respond to the diagnostic scan tool	GO to Pinpoint Test O
CMR does not respond to the diagnostic scan tool	GO to Pinpoint Test P
The DCMR does not respond to the diagnostic scan tool	GO to Pinpoint Test Q
The DDM does not respond to the diagnostic scan tool	GO to Pinpoint Test R
The DSM does not respond to the diagnostic scan tool	GO to Pinpoint Test S
The DSP does not respond to the diagnostic scan tool	GO to Pinpoint Test T
The FCIM does not respond to the diagnostic scan tool	GO to Pinpoint Test U
The GSM does not respond to the diagnostic scan tool	GO to Pinpoint Test V
The HCM does not respond to the diagnostic scan tool	GO to Pinpoint Test W
The HUD module does not respond to the diagnostic scan tool	GO to Pinpoint Test X
The IPC does not respond to the diagnostic scan tool	GO to Pinpoint Test Y
The IPMA does not respond to the diagnostic scan tool	GO to Pinpoint Test Z
The OCS module (except China) does not respond to the diagnostic scan tool	GO to Pinpoint Test AA
The PCM does not respond to the diagnostic scan tool	GO to Pinpoint Test AB
The PDM does not respond to the diagnostic scan tool	GO to Pinpoint Test AC
The PSCM does not respond to the diagnostic scan tool	GO to Pinpoint Test AD
The RACM does not respond to the diagnostic scan tool	GO to Pinpoint Test AE
The RBM does not respond to the diagnostic scan tool	GO to Pinpoint Test AF
The RCM does not respond to the diagnostic scan tool	GO to Pinpoint Test AG
The RFA module does not respond to the diagnostic scan tool	GO to Pinpoint Test AH
The RGTM does not respond to the diagnostic scan tool	GO to Pinpoint Test AI
The RTM does not respond to the diagnostic scan tool	GO to Pinpoint Test AJ
The SCCM does not respond to the diagnostic scan tool	GO to Pinpoint Test AK
The SCMB does not respond to the diagnostic scan tool	GO to Pinpoint Test AL
The Seat Control Module C (SCMC) does not respond to the diagnostic scan tool	GO to Pinpoint Test AM
The Seat Control Module D (SCMD) does not respond to the diagnostic scan tool	GO to Pinpoint Test AN
The SCME does not respond to the diagnostic scan tool (integrated with the DSM )	GO to Pinpoint Test S
The SCMF (integrated with the SCMB ) does not respond to the diagnostic scan tool	GO to Pinpoint Test AL
The SCMG does not respond to the diagnostic scan tool	GO to Pinpoint Test AO
The SCMH does not respond to the diagnostic scan tool	GO to Pinpoint Test AP
The SCMJ does not respond to the diagnostic scan tool	GO to Pinpoint Test AQ
The TCCM does not respond to the diagnostic scan tool	GO to Pinpoint Test AR
The TCU does not respond to the diagnostic scan tool	GO to Pinpoint Test AS
The TRM does not respond to the diagnostic scan tool	GO to Pinpoint Test AT
The VDM does not respond to the diagnostic scan tool	GO to Pinpoint Test AU
The WACM does not respond to the diagnostic scan tool	GO to Pinpoint Test AV

Pinpoint Tests

PINPOINT TEST A: NO POWER TO THE REMOTE DLC (DATA LINK CONNECTOR)

Normal Operation and Fault Conditions

The diagnostic scan tool is connected to the remote DLC to communicate with the DIAG1 and DIAG2 circuits. The GWM translates diagnostic messages for the FD-CAN , HS-CAN1 , HS-CAN2 , HS-CAN3 , HS-CAN4 and the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connector
Diagnostic scan tool
Remote DLC

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 160 (10A) is OK.

A1 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

Disconnect the diagnostic scan tool cable from the remote DLC .

Inspect the remote DLC pins 4, 5 and 16 for spreading or damage using a Rotunda flex probe with the dimensions: 1.5mm width x 0.80mm thickness.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions, if not printed on the probe.

Are any pin fit concerns or damage observed with remote DLC pins 4, 5 and 16?

Yes

GO to A2

A2 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) VOLTAGE SUPPLY FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-16 Ground

Is the voltage greater than 11 volts?

Yes

GO to A3

No	VERIFY BCMC [ BJB ] fuse 160 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

A3 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) GROUND CIRCUITS FOR AN OPEN

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-4 Ground

C2122-5 Ground

Are the resistances less than 3 ohms?

Yes

CHECK the diagnostic scan tool for correct operation.

No	REPAIR the circuit in question.

PINPOINT TEST B: NO FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The FD-CAN modules communicate with the diagnostic scan tool through the remote DLC DIAG1 circuits. REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
Remote DLC
ABS module
CMR ] (if equipped)
GWM
HCM
IPMA
PCM
PSCM
TCCM (if equipped)
VDM (if equipped)

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

B1 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

Disconnect the diagnostic scan tool cable from the remote DLC .

Inspect the remote DLC pins 4, 5, 6, 14 and 16 for spreading or damage using a Rotunda flex probe with the dimensions: 1.5mm width x 0.80mm thickness.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions, if not printed on the probe.

Are any pin fit concerns or damage observed with remote DLC pins 4, 5, 6, 14 and 16?

Yes

GO to B2

B2 CHECK THE DIAG1 NETWORK CIRCUIT TERMINATION RESISTANCE

Disconnect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-6 C2122-14

Is the resistance between 108 and 132 ohms?

Yes

GO to B3

No	If the resistance is greater than 132 ohms, GO to B5 If the resistance is less than 108 ohms, GO to B6

B3 CHECK THE DIAG1 NETWORK CIRCUIT (+) AND (-) CIRCUITS FOR A SHORT TO GROUND

Connect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-6 Ground

C2122-14 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to B4

GO to B7

B4 CHECK THE DIAG1 NETWORK CIRCUIT (+) AND (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-6 Ground

C2122-14 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the circuit in question.

GO to B8

B5 CHECK THE DIAG1 NETWORK CIRCUIT (+) AND (-) CIRCUITS FOR AN OPEN WITH THE GWM (GATEWAY MODULE A) DISCONNECTED

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-6 C4391A-5

C2122-14 C4391A-18

Are the resistances less than 3 ohms?

Yes

CONNECT the negative battery cable. GO to B28

No	REPAIR the circuit in question.

B6 CHECK THE DIAG1 NETWORK CIRCUIT (+) AND (-) CIRCUITS FOR A SHORT TOGETHER WITH THE GWM (GATEWAY MODULE A) DISCONNECTED

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-6 C2122-14

Is the resistance greater than 1,000 ohms?

Yes

CONNECT the negative battery cable. GO to B28

No	REPAIR the circuit.

B7 CHECK THE DIAG1 NETWORK CIRCUIT (+) AND (-) CIRCUITS FOR A SHORT TO GROUND WITH THE GWM (GATEWAY MODULE A) DISCONNECTED

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-6 Ground

C2122-14 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to B28

No	REPAIR the circuit in question.

B8 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) TERMINATION RESISTOR ( PSCM (POWER STEERING CONTROL MODULE) ) WITH THE GWM (GATEWAY MODULE A) DISCONNECTED

Ignition OFF.

Disconnect the negative battery cable.

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-4 C4391A-17

Is the resistance between 108 and 132 ohms?

Yes

GO to B9

No	If the resistance is greater than 132 ohms, GO to B12 If the resistance is less than 108 ohms, GO to B13

B9 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) (+) AND FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TO GROUND

Connect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-4 Ground

C4391A-17 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to B10

GO to B14

B10 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) (+) AND FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-4 Ground

C4391A-17 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the circuit in question.

GO to B11

B11 CHECK THE GWM (GATEWAY MODULE A) TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-4 (Component Side) C4391A-17 (Component Side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to B28

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

B12 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE PSCM (POWER STEERING CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect PSCM C1463A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1463A-4 C4391A-4

C1463A-5 C4391A-17

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to B15

No	REPAIR the circuit in question.

B13 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) (+) AND FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-4 C4391A-17

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- ABS module C135
- CMR C2826A (if equipped)
- HCM C2129
- IPMA C242B
- PCM C175B
- PSCM C1463A
- TCCM C2371A (if equipped)
- VDM C4396 (if equipped)

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

CONNECT all disconnected connectors.
For the ABS module, GO to B26
For the CMR , GO to B27
For the HCM , GO to B29
For the IPMA , GO to B30
For the PCM , GO to B31
For the PSCM , GO to B32
For the TCCM , GO to B33
For the VDM , GO to B34

No	REPAIR the circuit in question. CONNECT all modules.

B14 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) (+) AND FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-4 Ground

C4391A-17 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- ABS module C135
- CMR C2826A (if equipped)
- HCM C2129
- IPMA C242B
- PCM C175B
- PSCM C1463A
- TCCM C2371A (if equipped)
- VDM C4396 (if equipped)

Did the resistance change to greater than 1,000 ohms with one of the modules disconnected?

Yes

CONNECT the GWM .
For the ABS module, GO to B26
For the CMR , GO to B27
For the HCM , GO to B29
For the IPMA , GO to B30
For the PCM , GO to B31
For the PSCM , GO to B32
For the TCCM , GO to B33
For the VDM , GO to B34

No	REPAIR the circuit in question. CONNECT all modules.

B15 CHECK FOR RESTORED COMMUNICATION WITH THE PSCM (POWER STEERING CONTROL MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: PSCM C1463A.

Using a diagnostic scan tool, carry out the network test.

Do all other FD-CAN modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AD

No	CONNECT the module. GO to B16

B16 CHECK FOR RESTORED COMMUNICATION WITH THE PCM (POWERTRAIN CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuses 6 (20A) and 24 (10A).

Using a diagnostic scan tool, carry out the network test.

Do all other FD-CAN modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test AB

No	INSTALL the removed fuses. GO to B17

B17 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuses 23 (10A), 28 (50A) and 29 (50A).

Using a diagnostic scan tool, carry out the network test.

Do all other FD-CAN modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test I

No	INSTALL the removed fuses. GO to B18

B18 VERIFY VEHICLE EQUIPMENT - CMR (CAMERA MODULE - REAR)

Inspect the vehicle for a CMR .

Is the vehicle equipped with a CMR ?

Yes

GO to B19

GO to B20

B19 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE CMR (CAMERA MODULE - REAR) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 31 (10A).

Using a diagnostic scan tool, carry out the network test.

Do all other FD-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test P

No	INSTALL the removed fuse. GO to B20

B20 VERIFY VEHICLE EQUIPMENT - VDM (VEHICLE DYNAMICS CONTROL MODULE)

Inspect the vehicle for a VDM .

Is the vehicle equipped with a VDM ?

Yes

GO to B21

GO to B22

B21 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE VDM (VEHICLE DYNAMICS CONTROL MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: VDM C4396.

Using a diagnostic scan tool, carry out the network test.

Do all other FD-CAN modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AU

No	CONNECT the module. GO to B22

B22 VERIFY VEHICLE EQUIPMENT - TCCM (TRANSFER CASE CONTROL MODULE)

Verify the vehicle is equipped with a TCCM .

Is the vehicle equipped with a TCCM ?

Yes

GO to B23

GO to B24

B23 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE TCCM (TRANSFER CASE CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuses 64 (25A) and 82 (25A).

Using a diagnostic scan tool, carry out the network test.

Do all other FD-CAN modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test AR

No	INSTALL the removed fuses. GO to B24

B24 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE HCM (HEADLAMP CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuse 181 (5A).

Using a diagnostic scan tool, carry out the network test.

Do all other FD-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test W

No	INSTALL the removed fuse. GO to B25

B25 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE IPMA (IMAGE PROCESSING MODULE A) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuse 137 (20A).

Using a diagnostic scan tool, carry out the network test.

Do all other FD-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test Z

No	INSTALL the removed fuse. The FD-CAN tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

B26 CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the ABS module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ABS module connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,
REFER to: Anti-Lock Brake System (ABS) and Stability Control (206-09 Anti-Lock Brake System (ABS) and Stability Control, Diagnosis and Testing).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

B27 CHECK FOR CORRECT CMR (CAMERA MODULE - REAR) OPERATION

Ignition OFF.

Disconnect and inspect the CMR connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the CMR connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA If a service article exists for this concern, DISCONTINUE this test and FOLLOW service article instructions. If no service articles address this concern, INSTALL a new CMR .
REFER to: Driver Status Monitor Camera Module [CMR] (419-04B Interior Camera System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

B28 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

B29 CHECK FOR CORRECT HCM (HEADLAMP CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the HCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the HCM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HCM .
REFER to: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

B30 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect all the IPMA connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPMA connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

B31 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the PCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PCM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access Guided Routine (PCM).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

B32 CHECK FOR CORRECT PSCM (POWER STEERING CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the PSCM connectors and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PSCM connectors and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

B33 CHECK FOR CORRECT TCCM (TRANSFER CASE CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the TCCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the TCCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new TCCM .
REFER to: Transfer Case Control Module (TCCM) (307-07A Four-Wheel Drive Systems, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

B34 CHECK FOR CORRECT VDM (VEHICLE DYNAMICS CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the VDM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the VDM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new VDM .
REFER to: Vehicle Dynamics Control Module (VDM) (204-05 Vehicle Dynamic Suspension, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST C: NO HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The HS-CAN1 modules communicate with the diagnostic scan tool through the remote DLC DIAG1 circuits. REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
Remote DLC
BCM
BCMC [ BJB ]
DCMR (if equipped)
GWM

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

C1 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

Disconnect the diagnostic scan tool cable from the remote DLC .

Inspect the remote DLC pins 4, 5, 6, 14 and 16 for spreading or damage using a Rotunda flex probe with the dimensions: 1.5mm width x 0.80mm thickness.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions, if not printed on the probe.

Are any pin fit concerns or damage observed with remote DLC pins 4, 5, 6, 14 and 16?

Yes

GO to C2

C2 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] TERMINATION RESISTANCE

Ignition OFF.

Disconnect the negative battery cable.

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-7 C4391A-20

Is the resistance between 108 and 132 ohms?

Yes

GO to C3

No	If the resistance is greater than 132 ohms, GO to C6 If the resistance is less than 108 ohms, GO to C7

C3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR A SHORT TO GROUND

Connect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-7 Ground

C4391A-20 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to C4

GO to C8

C4 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-7 Ground

C4391A-20 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the circuit in question.

GO to C5

C5 CHECK THE GWM (GATEWAY MODULE A) HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-7 (Component Side) C4391A-20 (Component Side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to C16

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

C6 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect BCMC [ BJB ] C1035E .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1035E-2 C4391A-7

C1035E-6 C4391A-20

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to C9

No	REPAIR the circuit in question.

C7 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-7 C4391A-20

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- BCM C2280G
- BCMC [ BJB ] C1035E
- DCMR C3396 (if equipped)

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

CONNECT all disconnected connectors.
For the BCM , GO to C13
For the BCMC [ BJB ], GO to C14
For the DCMR , GO to C15

No	REPAIR the circuit in question. CONNECT all modules.

C8 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (+) AND HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2431-20 Ground

C2431-19 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- BCM C2280G
- BCMC [ BJB ] C1035E
- DCMR C3396 (if equipped)

Did the resistance change to greater than 1,000 ohms with one of the modules disconnected?

Yes

CONNECT the GWM .
For the BCM , GO to C13
For the BCMC [ BJB ], GO to C14
For the DCMR , GO to C15

No	REPAIR the circuit in question. CONNECT all modules.

C9 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] C1035E.

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test O

No	CONNECT the module. GO to C10

C10 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE BCM (BODY CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM C2280G.

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test N

No	CONNECT the module. GO to C11

C11 VERIFY VEHICLE EQUIPMENT - DCMR (DIFFERENTIAL CONTROL MODULE REAR)

Inspect the vehicle for a DCMR .

Is the vehicle equipped with a DCMR ?

Yes

GO to C12

No	The HS-CAN1 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

C12 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DCMR (DIFFERENTIAL CONTROL MODULE REAR) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect BCMC [ BJB ] fuse 54 (40A).

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN1 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test Q

No	INSTALL the removed fuse. The HS-CAN1 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

C13 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

C14 CHECK FOR CORRECT BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] OPERATION

Ignition OFF.

Disconnect and inspect all the BCMC [ BJB ] connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCMC [ BJB ] connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCMC [ BJB ].
REFER to: Body Control Module C (BCMC) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

C15 CHECK FOR CORRECT DCMR (DIFFERENTIAL CONTROL MODULE REAR) OPERATION

Ignition OFF.

Disconnect and inspect the DCMR connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DCMR connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DCMR .
REFER to: Differential Control Module Rear (DCMR) (205-02 Rear Drive Axle/Differential - Vehicles With: Ford 9.75 Inch Ring Gear, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

C16 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST D: NO HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The HS-CAN2 modules communicate with the diagnostic scan tool through the remote DLC DIAG2 circuits. REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
Remote DLC
ATCM
GSM
GWM
OCS module
RCM
SCCM

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

D1 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

Disconnect the diagnostic scan tool cable from the remote DLC .

Inspect the remote DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a Rotunda flex probe with the dimensions: 1.5mm width x 0.80mm thickness.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions, if not printed on the probe.

Are any pin fit concerns or damage observed with remote DLC pins 3, 4, 5, 11 and 16?

Yes

GO to D2

D2 CHECK THE DIAG2 NETWORK CIRCUIT TERMINATION RESISTANCE

Disconnect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-3 C2122-11

Is the resistance between 108 and 132 ohms?

Yes

GO to D3

No	If the resistance is greater than 132 ohms, GO to D5 If the resistance is less than 108 ohms, GO to D6

D3 CHECK THE DIAG2 NETWORK CIRCUIT (+) AND (-) CIRCUITS FOR A SHORT TO GROUND

Connect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-3 Ground

C2122-11 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to D4

GO to D7

D4 CHECK THE DIAG2 NETWORK CIRCUIT (+) AND (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-3 Ground

C2122-11 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the circuit in question.

GO to D8

D5 CHECK THE DIAG2 NETWORK CIRCUIT (+) AND (-) CIRCUITS FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-3 C4391A-6

C2122-11 C4391A-19

Are the resistances less than 3 ohms?

Yes

CONNECT the negative battery cable. GO to D23

No	REPAIR the circuit in question.

D6 CHECK THE DIAG2 NETWORK CIRCUIT (+) AND (-) CIRCUITS FOR A SHORT TOGETHER WITH THE GWM (GATEWAY MODULE A) DISCONNECTED

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-3 C2122-11

Is the resistance greater than 1,000 ohms?

Yes

CONNECT the negative battery cable. GO to D23

No	REPAIR the circuits.

D7 CHECK THE DIAG2 NETWORK CIRCUIT (+) AND (-) CIRCUITS FOR A SHORT TO GROUND WITH THE GWM (GATEWAY MODULE A) DISCONNECTED

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2122-3 Ground

C2122-11 Ground

Are the resistances greater than 1,000 ohms?

Yes

CONNECT the negative battery cable. GO to D23

No	REPAIR the circuit in question.

D8 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) TERMINATION RESISTOR ( SCCM (STEERING COLUMN CONTROL MODULE) ) WITH THE GWM (GATEWAY MODULE A) DISCONNECTED

Ignition OFF.

Disconnect the negative battery cable.

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-8 C4391A-21

Is the resistance between 108 and 132 ohms?

Yes

GO to D9

No	If the resistance is greater than 132 ohms, GO to D12 If the resistance is less than 108 ohms, GO to D13

D9 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR A SHORT TO GROUND

Connect the negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-8 Ground

C4391A-21 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to D10

GO to D14

D10 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-8 Ground

C4391A-21 Ground

Is the voltage greater than 6 volts on either circuit?

Yes

REPAIR the circuit in question.

GO to D11

D11 CHECK THE GWM (GATEWAY MODULE A) HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-8 (Component Side) C4391A-21 (Component Side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to D23

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

D12 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE SCCM (STEERING COLUMN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect SCCM C226A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C226A-5 C4391A-8

C226A-6 C4391A-21

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to D15

No	REPAIR the circuit in question.

D13 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-8 C4391A-21

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- ATCM C3393
- GSM C2532
- OCS module C3285 (except China)
- RCM C310B
- SCCM C226A

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

CONNECT all disconnected connectors.
For the ATCM , GO to D21
For the GSM , GO to D22
For the OCS module, GO to D24
For the RCM , GO to D25
For the SCCM , GO to D26

No	REPAIR the circuit in question. CONNECT all modules.

D14 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (+) AND HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-8 Ground

C4391A-21 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- ATCM C3393
- GSM C2532
- OCS module C3285 (except China)
- RCM C310B
- SCCM C226A

Did the resistance change to greater than 1,000 ohms with one of the modules disconnected?

Yes

CONNECT the GWM .
For the ATCM , GO to D21
For the GSM , GO to D22
For the OCS module, GO to D24
For the RCM , GO to D25
For the SCCM , GO to D26

No	REPAIR the circuit in question. CONNECT all modules.

D15 CHECK FOR RESTORED COMMUNICATION WITH THE SCCM (STEERING COLUMN CONTROL MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: SCCM C226A.

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AK

No	CONNECT the module. GO to D16

D16 CHECK FOR RESTORED COMMUNICATION WITH THE ATCM (ALL TERRAIN CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 31 (10A).

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test M

No	INSTALL the removed fuse. GO to D17

D17 VERIFY VEHICLE EQUIPMENT - OCS (OCCUPANT CLASSIFICATION SYSTEM)

Inspect the vehicle for an OCS .

Is the vehicle equipped with an OCS ?

Yes

GO to D18

GO to D19

D18 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: OCS module C3285.

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AA

No	CONNECT the module. GO to D19

D19 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE GSM (GEAR SHIFT MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 7 (10A).

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN2 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test V

No	INSTALL the removed fuse. GO to D20

D20 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RCM (RESTRAINTS CONTROL MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: RCM C310B.

Using a diagnostic scan tool, carry out the network test.

Do all other modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AG

No	CONNECT the module. The HS-CAN2 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

D21 CHECK FOR CORRECT ATCM (ALL TERRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the ATCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ATCM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new ATCM .
REFER to: All Terrain Control Module (ATCM) (307-07A Four-Wheel Drive Systems, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

D22 CHECK FOR CORRECT GSM (GEAR SHIFT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the GSM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GSM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GSM .
REFER to: Gear Shift Module (GSM) (307-05 Automatic Transmission External Controls, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

D23 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

D24 CHECK FOR CORRECT OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the OCS module connector and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the OCS module connector and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new OCS module.
REFER to: Occupant Classification System (OCS) Sensor (501-20 Supplemental Restraint System) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

D25 CHECK FOR CORRECT RCM (RESTRAINTS CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the RCM connectors and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RCM connectors and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RCM .
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

D26 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the SCCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST E: NO HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

Diagnostic messages sent/received between the diagnostic scan tool and the HS-CAN3 modules are accessed through the DIAG2 circuits on the remote DLC . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
Remote DLC
ACM (except China)
APIM
DSP
GWM
HUD module (if equipped)
IPC
RACM (if equipped)
TRM (if equipped)
WACM

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

E1 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

Disconnect the diagnostic scan tool cable from the remote DLC .

Inspect the remote DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a Rotunda flex probe with the dimensions: 1.5mm width x 0.80mm thickness.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions, if not printed on the probe.

Are any pin fit concerns or damage observed with remote DLC pins 3, 4, 5, 11 and 16?

Yes

GO to E2

E2 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) ( IPC (INSTRUMENT PANEL CLUSTER) ) TERMINATION RESISTANCE

Disconnect negative battery cable.

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-9 C4391A-22

Is the resistance between 108 and 132 ohms?

Yes

GO to E3

No	If the resistance is greater than 132 ohms, GO to E6 If the resistance is less than 108 ohms, GO to E7

E3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A SHORT TO GROUND

Connect negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-9 Ground

C4391A-22 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to E4

GO to E8

E4 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-9 Ground

C4391A-22 Ground

Are the voltages greater than 6 volts?

Yes

REPAIR the circuit in question.

GO to E5

E5 CHECK THE GWM (GATEWAY MODULE A) HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-9 (Component Side) C4391A-22 (Component Side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to E23

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

E6 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE IPC (INSTRUMENT PANEL CLUSTER) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: IPC C220A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C220A-12 C4391A-9

C220A-13 C4391A-22

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to E9

No	REPAIR the circuit in question.

E7 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-9 C4391A-22

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- ACM C240A (except China)
- APIM C2383A (SYNC4) or C2342B (SYNC+)
- DSP C4348C (14 speaker) or C4548C (28 speaker)
- HUD module C2877 (if equipped)
- IPC C220A
- RACM C3511 (if equipped)
- TRM C2498C (if equipped)
- WACM C390

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

CONNECT all disconnected connectors.
For the ACM , GO to E20
For the APIM , GO to E21
For the DSP , GO to E22
For the HUD module, GO to E24
For the IPC , GO to E25
For the RACM , GO to E26
For the TRM , GO to E27
For the WACM , GO to E28

No	REPAIR the circuits in question. CONNECT all modules.

E8 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (+) AND HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-9 Ground

C4391A-22 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- ACM C240A (except China)
- APIM C2383A (SYNC4) or C2342B (SYNC+)
- DSP C4348C (14 speaker) or C4548C (28 speaker)
- HUD module C2877 (if equipped)
- IPC C220A
- RACM C3511 (if equipped)
- TRM C2498C (if equipped)
- WACM C390

Are the resistances greater than 1,000 ohms?

Yes

CONNECT the GWM .
For the ACM , GO to E20
For the APIM , GO to E21
For the DSP , GO to E22
For the HUD module, GO to E24
For the IPC , GO to E25
For the RACM , GO to E26
For the TRM , GO to E27
For the WACM , GO to E28

No	REPAIR the circuit in question. CONNECT all modules.

E9 CHECK FOR RESTORED COMMUNICATION WITH THE IPC (INSTRUMENT PANEL CLUSTER) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: IPC C220A.

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test Y

No	CONNECT the module. For SYNC4, GO to E10 CONNECT the module. For SYNC+, GO to E11

E10 CHECK FOR RESTORED COMMUNICATION WITH THE APIM (SYNC MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 15 (15A).

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test K

No	INSTALL the removed fuse. GO to E12

E11 CHECK FOR RESTORED COMMUNICATION WITH THE APIM (SYNC MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 32 (20A).

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test L

No	INSTALL the removed fuse. GO to E13

E12 CHECK FOR RESTORED COMMUNICATION WITH THE ACM (AUDIO FRONT CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 32 (20A).

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test J

No	INSTALL the removed fuse. GO to E13

E13 CHECK FOR RESTORED COMMUNICATION WITH THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuses 4 (20A) and 25 (20A).

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test T

No	INSTALL the removed fuses. GO to E14

E14 VERIFY VEHICLE EQUIPMENT - TRM (TRAILER MODULE)

Inspect the vehicle for a TRM .

Is the vehicle equipped with a TRM ?

Yes

GO to E15

GO to E16

E15 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE TRM (TRAILER MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuses 42 (30A), 91 (20A) and 107 (30A).

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test AT

No	INSTALL the removed fuses. GO to E16

E16 CHECK FOR RESTORED COMMUNICATION WITH THE WACM (WIRELESS ACCESSORY CHARGING MODULE) AND HUD (HEAD UP DISPLAY) MODULE (IF EQUIPPED) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 3 (7.5A).

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

INSTALL the removed fuse. GO to E17

No	INSTALL the removed fuse. GO to E18

E17 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE WACM (WIRELESS ACCESSORY CHARGING MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: WACM C390.

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AV

No	CONNECT the module. GO to Pinpoint Test X

E18 VERIFY VEHICLE EQUIPMENT - RACM (REAR AUDIO CONTROL MODULE)

Inspect the vehicle for a RACM .

Is the vehicle equipped with a RACM ?

Yes

GO to E19

No	The HS-CAN3 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

E19 CHECK FOR RESTORED COMMUNICATION WITH THE RACM (REAR AUDIO CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 9 (5A).

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN3 modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AE

No	INSTALL the removed fuse. The HS-CAN3 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

E20 CHECK THE ACM (AUDIO FRONT CONTROL MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the ACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ACM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

E21 CHECK THE APIM (SYNC MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the APIM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new APIM . For vehicles equipped with SYNC4,
REFER to: SYNC Module [APIM] (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
For vehicles equipped with SYNC+, REFER to: SYNC Module [APIM] (415-00 Information and Entertainment System - General Information) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

E22 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the DSP connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DSP connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DSP . For vehicles equipped with SYNC4,
REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
For vehicles equipped with SYNC+, REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

E23 CHECK THE GWM (GATEWAY MODULE A) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

E24 CHECK FOR CORRECT HUD (HEAD UP DISPLAY) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the HUD module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the HUD module connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HUD module.
REFER to: Head Up Display (HUD) Module (419-03B Collision Warning and Collision Avoidance System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

E25 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the IPC connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPC connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPC .
REFER to: Instrument Panel Cluster (IPC) (413-01 Instrumentation, Message Center and Warning Chimes, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

E26 CHECK THE RACM (REAR AUDIO CONTROL MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the RACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RACM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RACM . For SYNC4,
REFER to: Rear Audio Control Module (RACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
For SYNC+, REFER to: Rear Audio Control Module (RACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

E27 CHECK THE TRM (TRAILER MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the TRM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the TRM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new TRM .
REFER to: Trailer Module (TRM) (417-01 Exterior Lighting, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

E28 CHECK THE WACM (WIRELESS ACCESSORY CHARGING MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the WACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the WACM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new WACM .
REFER to: Wireless Accessory Charging Module (WACM) (414-06 Accessory Charging, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST F: NO HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

Diagnostic messages sent/received between the diagnostic scan tool and the HS-CAN4 modules are accessed through the DIAG2 circuits on the remote DLC . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
Remote DLC
GWM
RFA module (if equipped)
TCU

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

F1 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

Disconnect the diagnostic scan tool cable from the remote DLC .

Inspect the remote DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a Rotunda flex probe with the dimensions: 1.5mm width x 0.80mm thickness.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions, if not printed on the probe.

Are any pin fit concerns or damage observed with remote DLC pins 3, 4, 5, 11 and 16?

Yes

GO to F2

F2 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) ( TCU (TELEMATIC CONTROL UNIT MODULE) ) TERMINATION RESISTANCE

Disconnect negative battery cable.

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-10 C4391A-23

Is the resistance between 108 and 132 ohms?

Yes

GO to F3

No	If the resistance is greater than 132 ohms, GO to F6 If the resistance is less than 108 ohms, GO to F7

F3 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR A SHORT TO GROUND

Connect negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-10 Ground

C4391A-23 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to F4

GO to F8

F4 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-10 Ground

C4391A-23 Ground

Are the voltages greater than 6 volts?

Yes

REPAIR the circuit in question.

GO to F5

F5 CHECK THE GWM (GATEWAY MODULE A) HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-10 (Component Side) C4391A-23 (Component Side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to F12

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

F6 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN THE TCU (TELEMATIC CONTROL UNIT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: TCU C2494A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2494A-10 C4391A-10

C2494A-20 C4391A-23

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to F9

No	REPAIR the circuit in question.

F7 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-10 C4391A-23

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- RFA module C3860 (if equipped)
- TCU C2494A

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

CONNECT all disconnected connectors.
For the RFA module, GO to F13
For the TCU , GO to F14

No	REPAIR the circuits in question. CONNECT all modules.

F8 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (+) AND HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-10 Ground

C4391A-23 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- RFA module C3860 (if equipped)
- TCU C2494A

Are the resistances greater than 1,000 ohms?

Yes

CONNECT the GWM .
For the RFA module, GO to F13
For the TCU , GO to F14

No	REPAIR the circuit in question. CONNECT all modules.

F9 CHECK FOR RESTORED COMMUNICATION WITH THE TCU (TELEMATIC CONTROL UNIT MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: TCU C2494A.

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN4 modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AS

No	CONNECT the module. GO to F10

F10 VERIFY VEHICLE EQUIPMENT - RFA (REMOTE FUNCTION ACTUATOR) MODULE

Inspect the vehicle for a RFA module.

Is the vehicle equipped with a RFA module?

Yes

GO to F11

No	The HS-CAN4 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

F11 CHECK FOR RESTORED COMMUNICATION WITH THE RFA (REMOTE FUNCTION ACTUATOR) MODULE DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM 3-blade fuse 19/20 (5A).

CONNECT a fused jumper wire to the open socket of BCM fuse 20.
Refer to Wiring Diagrams Cell 11 for schematic and connector information.

Using a diagnostic scan tool, carry out the network test.

Do all other HS-CAN4 modules pass the network test?

Yes

REMOVE the fused jumper wire and INSTALL the removed fuse. GO to Pinpoint Test AH

REMOVE the fused jumper wire and INSTALL the removed fuse. The HS-CAN4 tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

F12 CHECK THE GWM (GATEWAY MODULE A) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

F13 CHECK THE RFA (REMOTE FUNCTION ACTUATOR) MODULE FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the RFA module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RFA module connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RFA .
REFER to: Remote Function Actuator (RFA) Module (419-01C Passive Anti-Theft System (PATS) - Vehicles With: Phone as a Key, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

F14 CHECK THE TCU (TELEMATIC CONTROL UNIT MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the TCU connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the TCU connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new TCU . For vehicles equipped with SYNC4,
REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
For vehicles equipped with SYNC+, REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST G: NO MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

Diagnostic messages sent/received between the diagnostic scan tool and the MS-CAN modules are accessed through the DIAG2 circuits on the remote DLC . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals or connectors
Remote DLC
DDM
DSM
FCIM
GWM
PDM
RBM (if equipped)
RGTM
RTM
SCMB
Seat Control Module C (SCMC) (if equipped)
Seat Control Module D (SCMD) (if equipped)
SCMG (if equipped)
SCMH (if equipped)
SCMJ

NOTE: Various modules set network DTCs during this test procedure. Clear DTCs from all modules after completing the diagnostic procedure.

G1 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

Disconnect the diagnostic scan tool cable from the remote DLC .

Inspect the remote DLC pins 3, 4, 5, 11 and 16 for spreading or damage using a Rotunda flex probe with the dimensions: 1.5mm width x 0.80mm thickness.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions, if not printed on the probe.

Are any pin fit concerns or damage observed with remote DLC pins 3, 4, 5, 11 and 16?

Yes

GO to G2

G2 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) ( FCIM (FRONT CONTROLS INTERFACE MODULE) ) TERMINATION RESISTANCE

Disconnect negative battery cable.

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-3 C4391A-16

Is the resistance between 108 and 132 ohms?

Yes

GO to G3

No	If the resistance is greater than 132 ohms, GO to G6 If the resistance is less than 108 ohms, GO to G7

G3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TO GROUND

Connect negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-3 Ground

C4391A-16 Ground

Are the resistances greater than 1,000 ohms?

Yes

GO to G4

GO to G8

G4 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TO VOLTAGE

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-3 Ground

C4391A-16 Ground

Are the voltages greater than 6 volts?

Yes

REPAIR the circuit in question.

GO to G5

G5 CHECK THE GWM (GATEWAY MODULE A) MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-3 (Component Side) C4391A-16 (Component Side)

Is the resistance between 108 ohms and 132 ohms?

Yes

GO to G28

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

G6 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE FCIM (FRONT CONTROLS INTERFACE MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: FCIM C2402A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2402A-17 C4391A-3

C2402A-18 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to G9

No	REPAIR the circuit in question.

G7 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TOGETHER WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-3 C4391A-16

Disconnect modules one at a time until the resistance is greater than 3 ohms.
- DDM C501A
- DSM C341A
- FCIM C2402A
- PDM C652A
- RBM C3313B (if equipped)
- RGTM C4174A
- RTM C9026
- SCMB C342A
- Seat Control Module C (SCMC) C3721 (if equipped)
- Seat Control Module D (SCMD) C3720 (if equipped)
- SCMG C3385 (if equipped)
- SCMH C3386 (if equipped)
- SCMJ C4250D

Did the resistance change to greater than 3 ohms with one of the modules disconnected?

Yes

CONNECT all disconnected connectors.
For the DDM , GO to G25
For the DSM , GO to G26
For the FCIM , GO to G27
For the PDM , GO to G29
For the RBM , GO to G30
For the RGTM , GO to G31
For the RTM , GO to G32
For the SCMB , GO to G33
For the Seat Control Module C (SCMC), GO to G34
For the Seat Control Module D (SCMD), GO to G35
For the SCMG , GO to G36
For the SCMH , GO to G37
For the SCMJ , GO to G38

No	REPAIR the circuits in question. CONNECT all modules.

G8 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (+) AND MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) (-) CIRCUITS FOR A SHORT TO GROUND WITH THE MODULES DISCONNECTED

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-3 Ground

C4391A-16 Ground

Disconnect modules one at a time until the resistance to ground is greater than 1,000 ohms.
- DDM C501A
- DSM C341A
- FCIM C2402A
- PDM C652A
- RBM C3313B (if equipped)
- RGTM C4174A
- RTM C9026
- SCMB C342A
- Seat Control Module C (SCMC) C3721 (if equipped)
- Seat Control Module D (SCMD) C3720 (if equipped)
- SCMG C3385 (if equipped)
- SCMH C3386 (if equipped)
- SCMJ C4250D

Are the resistances greater than 1,000 ohms?

Yes

CONNECT the GWM .
For the DDM , GO to G25
For the DSM , GO to G26
For the FCIM , GO to G27
For the PDM , GO to G29
For the RBM , GO to G30
For the RGTM , GO to G31
For the RTM , GO to G32
For the SCMB , GO to G33
For the Seat Control Module C (SCMC), GO to G34
For the Seat Control Module D (SCMD), GO to G35
For the SCMG , GO to G36
For the SCMH , GO to G37
For the SCMJ , GO to G38

No	REPAIR the circuit in question. CONNECT all modules.

G9 CHECK FOR RESTORED COMMUNICATION WITH THE FCIM (FRONT CONTROLS INTERFACE MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: FCIM C2402A.

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test U

No	CONNECT the module. GO to G10

G10 CHECK FOR RESTORED COMMUNICATION WITH THE RTM (RADIO TRANSCEIVER MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCM fuse 31 (10A).

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AJ

No	INSTALL the removed fuse. GO to G11

G11 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE PDM (PASSENGER DOOR MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuse 183 (60A).

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AC

No	INSTALL the removed fuse. GO to G12

G12 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DDM (DRIVER DOOR MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuse 182 (60A).

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test R

No	INSTALL the removed fuse. GO to G13

G13 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE DSM (DRIVER FRONT SEAT MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuses 30 (30A) and 38 (30A).

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test S

No	INSTALL the removed fuses. GO to G14

G14 VERIFY VEHICLE EQUIPMENT - SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) AND SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE)

Inspect the vehicle for a SCMG and SCMH .

Is the vehicle equipped with a SCMG and SCMH ?

Yes

GO to G15

GO to G17

G15 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) AND SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuse 134 (20A).

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to G16

No	INSTALL the removed fuse. GO to G17

G16 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: SCMG C3385.

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AO

No	CONNECT the module. GO to Pinpoint Test AP

G17 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SCMB (PASSENGER FRONT SEAT MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuses 31 (30A) and 37 (30A).

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test AL

No	INSTALL the removed fuses. GO to G18

G18 VERIFY VEHICLE EQUIPMENT - SEAT CONTROL MODULE C (SCMC) AND SEAT CONTROL MODULE D (SCMD)

Inspect the vehicle for a Seat Control Module C (SCMC) and Seat Control Module D (SCMD).

Is the vehicle equipped with a Seat Control Module C (SCMC) and Seat Control Module D (SCMD)?

Yes

GO to G19

GO to G21

G19 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SEAT CONTROL MODULE C (SCMC) AND SEAT CONTROL MODULE D (SCMD) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuse 59 (20A).

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to G20

No	INSTALL the removed fuse. GO to G21

G20 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE SEAT CONTROL MODULE C (SCMC) DISCONNECTED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: Seat Control Module C (SCMC) C3721.

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

CONNECT the module. GO to Pinpoint Test AM

No	CONNECT the module. GO to Pinpoint Test AN

G21 CHECK FOR RESTORED COMMUNICATION WITH THE SCMJ (POWER FOLD SEAT MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuse 73 (50A).

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AQ

No	INSTALL the removed fuse. GO to G22

G22 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RGTM (REAR GATE TRUNK MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuse 41 (30A) and BCM fuse 8 (5A).

Using a diagnostic scan tool, carry out the network test.

Do all other modules pass the network test?

Yes

INSTALL the removed fuses. GO to Pinpoint Test AI

No	INSTALL the removed fuses. GO to G23

G23 VERIFY VEHICLE EQUIPMENT - RBM (RUNNING BOARD CONTROL MODULE)

Verify the vehicle is equipped with a RBM .

Is the vehicle equipped with a RBM ?

Yes

GO to G24

No	The MS-CAN tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

G24 CHECK FOR RESTORED NETWORK COMMUNICATION WITH THE RBM (RUNNING BOARD CONTROL MODULE) DISABLED

NOTE: When re-running the network test, close the network test application first or the screen display reverts back to the prior network test results.

Disconnect: BCMC [ BJB ] fuse 40 (40A).

Using a diagnostic scan tool, carry out the network test.

Do all other MS-CAN modules pass the network test?

Yes

INSTALL the removed fuse. GO to Pinpoint Test AF

No	INSTALL the removed fuse. The MS-CAN tests within specification. The concern may have been caused by module connections. CONNECT any disconnected connectors or fuses. Test for normal operation. If the concern is still present, ADDRESS the root cause of any connector or pin issues.

G25 CHECK THE DDM (DRIVER DOOR MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the DDM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DDM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DDM .
REFER to: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G26 CHECK THE DSM (DRIVER FRONT SEAT MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G27 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the FCIM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the FCIM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new FCIM .
REFER to: Front Controls Interface Module (FCIM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G28 CHECK THE GWM (GATEWAY MODULE A) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G29 CHECK THE PDM (PASSENGER DOOR MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the PDM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PDM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new PDM .
REFER to: Passenger Door Module (PDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G30 CHECK THE RBM (RUNNING BOARD CONTROL MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the RBM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RBM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RBM .
REFER to: Running Board Control Module (RBM) (501-08 Exterior Trim and Ornamentation, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G31 CHECK THE RGTM (REAR GATE TRUNK MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the RGTM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RGTM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RGTM .
REFER to: Rear Gate Trunk Module (RGTM) (501-03 Body Closures, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G32 CHECK THE RTM (RADIO TRANSCEIVER MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the RTM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RTM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RTM .
REFER to: Radio Transceiver Module (RTM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G33 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G34 CHECK THE SEAT CONTROL MODULE C (SCMC) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the Seat Control Module C (SCMC) connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the Seat Control Module C (SCMC) connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new Driver Second Row Seat Power Lumbar Assembly.
REFER to: Second Row Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10B Second Row Seats, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G35 CHECK THE SEAT CONTROL MODULE D (SCMD) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the Seat Control Module D (SCMD) connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the Seat Control Module D (SCMD) connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new Passenger Second Row Seat Power Lumbar Assembly.
REFER to: Second Row Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10B Second Row Seats, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G36 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the SCMG connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMG connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMG .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10 Front Seats) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G37 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect the SCMH connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMH connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10 Front Seats) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

G38 CHECK THE SCMJ (POWER FOLD SEAT MODULE) FOR CORRECT OPERATION

Ignition OFF.

Disconnect and inspect all the SCMJ connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMJ connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMJ .
REFER to: Power Fold Seat Module (PFSM) (501-10C Third Row Seats, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST H: ALL NETWORKS DO NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The GWM communicates with the diagnostic scan tool through the DIAG1 and DIAG2 networks. The GWM operates as a gateway for communication between the modules on FD-CAN , HS-CAN1 , HS-CAN2 , HS-CAN3 , HS-CAN4 and MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
GWM
Remote DLC

Visual Inspection and Pre-checks

Verify BCM fuse 12 (7.5A) is OK.

H1 CHECK THE REMOTE DLC (DATA LINK CONNECTOR) PINS FOR DAMAGE

Ignition OFF.

Disconnect the diagnostic scan tool cable from the remote DLC .

Inspect the remote DLC pins 3, 4, 5, 6, 11, 14 and 16 for spreading or damage using a Rotunda flex probe with the dimensions: 1.5mm width x 0.80mm thickness.
- Refer to the Rotunda flex probe or probe kit documentation to confirm the dimensions, if not printed on the probe.

Are any pin fit concerns or damage observed with remote DLC pins 3, 4, 5, 6, 11, 14 and 16?

Yes

GO to H2

H2 CHECK THE GWM (GATEWAY MODULE A) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: GWM C4391A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-13 Ground

Is the voltage greater than 11 volts?

Yes

GO to H3

No	VERIFY BCM fuse 12 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

H3 CHECK THE GWM (GATEWAY MODULE A) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-14 Ground

Is the resistance less than 3 ohms?

Yes

GO to H4

No	REPAIR the circuit.

H4 CHECK THE DIAG1 AND DIAG2 NETWORK CIRCUITS FOR A SHORT TOGETHER

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C4391A-5		C4391A-6
C4391A-5		C4391A-19
C4391A-18		C4391A-6
C4391A-18		C4391A-19

Are the resistances greater than 1,000 ohms?

Yes

GO to H5

No	REPAIR the circuits.

H5 CHECK THE GWM (GATEWAY MODULE A) DIAG1 TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-5 (Component Side) C4391A-18 (Component Side)

Is the resistance between 108 and 132 ohms?

Yes

GO to H6

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

H6 CHECK THE GWM (GATEWAY MODULE A) DIAG2 TERMINATION RESISTOR (COMPONENT SIDE)

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-6 (Component Side) C4391A-19 (Component Side)

Is the resistance between 108 and 132 ohms?

Yes

Replace the remote DLC . If the concern is still present, GO to H7

No	INSTALL a new GWM . REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

H7 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST I: THE ABS (ANTI-LOCK BRAKE SYSTEM) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 42 for schematic and connector information.

Normal Operation and Fault Conditions

The ABS module communicates on the FD-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connectors
ABS module

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuses 23 (10A), 28 (50A) and 29 (50A) are OK.

I1 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: ABS module C135.

Ignition ON.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C135-1		Ground
C135-14		Ground
C135-45		Ground

Are the voltages greater than 11 volts?

Yes

GO to I2

No	VERIFY BCMC [ BJB ] fuses 23 (10A), 28 (50A) and 29 (50A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

I2 CHECK THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C135-30 Ground

C135-46 Ground

Are the resistances less than 3 ohms?

Yes

GO to I3

No	REPAIR the circuit in question.

I3 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE ABS (ANTI-LOCK BRAKE SYSTEM) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C135-22 C4391A-4

C135-23 C4391A-17

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to I4

No	REPAIR the circuit in question.

I4 CHECK FOR CORRECT ABS (ANTI-LOCK BRAKE SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the ABS module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ABS module connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern,
REFER to: Anti-Lock Brake System (ABS) and Stability Control (206-09 Anti-Lock Brake System (ABS) and Stability Control, Diagnosis and Testing).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST J: THE ACM (AUDIO FRONT CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 134 for schematic and connector information.

Normal Operation and Fault Conditions

The ACM communicates on the HS-CAN3 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
ACM

Visual Inspection and Pre-checks

Verify BCM fuse 32 (20A) is OK.

J1 CHECK THE ACM (AUDIO FRONT CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: ACM C240A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C240A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to J2

No	VERIFY BCM fuse 32 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

J2 CHECK THE ACM (AUDIO FRONT CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C240A-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to J3

No	REPAIR the circuit.

J3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE ACM (AUDIO FRONT CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C240A-19 C4391A-9

C240A-30 C4391A-22

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to J4

No	REPAIR the circuit in question.

J4 CHECK FOR CORRECT ACM (AUDIO FRONT CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the ACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ACM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new ACM .
REFER to: Audio Front Control Module (ACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST K: THE APIM (SYNC MODULE) (SYNC4) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 134 for schematic and connector information.

Normal Operation and Fault Conditions

The APIM communicates on the HS-CAN3 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
APIM

Visual Inspection and Pre-checks

Verify BCM fuse 15 (15A) is OK. BCM fuse 15 is a 3-blade fuse containing fuse 14.

K1 CHECK THE APIM (SYNC MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: APIM C2383A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2383A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to K2

No	VERIFY BCM fuse 15 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

K2 CHECK THE APIM (SYNC MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2383A-37 Ground

Is the resistance less than 3 ohms?

Yes

GO to K3

No	REPAIR the circuit.

K3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2383A-19 C4391A-9

C2383A-20 C4391A-22

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to K4

No	REPAIR the circuit in question.

K4 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the APIM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new APIM .
REFER to: SYNC Module [APIM] (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST L: THE APIM (SYNC MODULE) (SYNC+) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 130 for schematic and connector information.

Normal Operation and Fault Conditions

Possible Sources

Fuse
Wiring, terminals and connector
APIM

Visual Inspection and Pre-checks

Verify BCM fuse 32 (20A) is OK.

L1 CHECK THE APIM (SYNC MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: APIM C2342A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2342A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to L2

No	VERIFY BCM fuse 32 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

L2 CHECK THE APIM (SYNC MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2342A-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to L3

No	REPAIR the circuit.

L3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE APIM (SYNC MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2342B-19 C4391A-9

C2342B-20 C4391A-22

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to L4

No	REPAIR the circuit in question.

L4 CHECK FOR CORRECT APIM (SYNC MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the APIM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the APIM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new APIM .
REFER to: SYNC Module [APIM] (415-00 Information and Entertainment System - General Information) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST M: THE ATCM (ALL TERRAIN CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 34 for schematic and connector information.

Normal Operation and Fault Conditions

The ATCM communicates on the HS-CAN2 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
ATCM

Visual Inspection and Pre-checks

Verify BCM fuse 31 (10A) is OK.

M1 CHECK THE ATCM (ALL TERRAIN CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: ATCM C3393.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3393-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to M2

No	VERIFY BCM fuse 31 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

M2 CHECK THE ATCM (ALL TERRAIN CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3393-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to M3

No	REPAIR the circuit.

M3 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE ATCM (ALL TERRAIN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3393-3 C4391A-8

C3393-2 C4391A-21

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to M4

No	REPAIR the circuit in question.

M4 CHECK FOR CORRECT ATCM (ALL TERRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the ATCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the ATCM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new ATCM .
REFER to: All Terrain Control Module (ATCM) (307-07A Four-Wheel Drive Systems, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST N: THE BCM (BODY CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 10 for schematic and connector information. Refer to Wiring Diagrams Cell 13 for schematic and connector information. Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The BCM communicates on the HS-CAN1 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
BCM

Visual Inspection and Pre-checks

Verify High Current BCMC [ BJB ] MEGA fuse 202 (80A) and BCMC [ BJB ] fuses 19 (30A) and 21 (30A) are OK.

N1 CHECK THE BCM (BODY CONTROL MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: BCM C2280G and C2280H.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280H-1 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280G-22 Ground

C2280G-21 Ground

Are the voltages greater than 11 volts?

Yes

Connect BCM C2280H. GO to N2

No	VERIFY High Current BCMC [ BJB ] MEGA fuse 202 (80A) and BCMC [ BJB ] fuses 19 (30A) and 21 (30A) are OK. If OK, repair the circuit in question. If not OK, REFER to the Wiring Diagrams Manual to identify the possible causes of the circuit short.

N2 CHECK THE BCM (BODY CONTROL MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: BCM C2280C.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C2280C-6		Ground
C2280C-7		Ground
C2280C-10		Ground

Are the resistances less than 3 ohms?

Yes

GO to N3

No	REPAIR the circuit in question.

N3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE BCM (BODY CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2280G-10 C4391A-7

C2280G-9 C4391A-20

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to N4

No	REPAIR the circuit in question.

N4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Disconnect and inspect all the BCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCM .
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST O: THE BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 13 for schematic and connector information. Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The BCMC [ BJB ] communicates on the HS-CAN1 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Wiring, terminals and connector
BCMC [ BJB ]

O1 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) TERMINATION RESISTANCE

Ignition OFF.

Disconnect negative battery cable.

Disconnect the diagnostic scan tool cable from the remote DLC .

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-7 C4391A-20

Is the resistance between 108 and 132 ohms?

Yes

GO to O3

GO to O2

O2 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: BCMC [ BJB ] C1035E.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1035E-2 C4391A-7

C1035E-6 C4391A-20

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to O5

No	REPAIR the circuit in question.

O3 CHECK THE BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: BCMC [ BJB ] C1617A.

Connect negative battery cable.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1617A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to O4

No	Repair the circuit.

O4 CHECK THE BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect negative battery cable.

Disconnect: BCMC [ BJB ] C1035B, C1035C and C1035E.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1035B-5 Ground

C1035B-33 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1035C-1 Ground

C1035C-24 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1035E-4 Ground

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to O5

No	REPAIR the circuit in question.

O5 CHECK FOR CORRECT BCMC (BODY CONTROL MODULE C) [ BJB (BATTERY JUNCTION BOX) ] OPERATION

Disconnect and inspect all the BCMC [ BJB ] connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the BCMC [ BJB ] connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new BCMC [ BJB ].
REFER to: Body Control Module C (BCMC) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST P: THE CMR (CAMERA MODULE - REAR) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 31 for schematic and connector information.

Normal Operation and Fault Conditions

The CMR communicates on the FD-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
CMR

Visual Inspection and Pre-checks

Verify BCM fuse 31 (10A) is OK.

P1 CHECK THE CMR (CAMERA MODULE - REAR) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: CMR C2826A.

Ignition ON.

Measure:

Positive Lead Measurement / Action Negative Lead

C2826A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to P2

No	VERIFY BCM fuse 31 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

P2 CHECK THE CMR (CAMERA MODULE - REAR) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

Positive Lead Measurement / Action Negative Lead

C2826A-12 Ground

Is the resistance less than 3 ohms?

Yes

GO to P3

No	REPAIR the circuit.

P3 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE CMR (CAMERA MODULE - REAR) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:

Positive Lead Measurement / Action Negative Lead

C2826A-3 C4391A-4

C2826A-4 C4391A-17

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to P4

No	REPAIR the circuit in question.

P4 CHECK FOR CORRECT CMR (CAMERA MODULE - REAR) OPERATION

Ignition OFF.

Disconnect and inspect the CMR connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the CMR connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST Q: THE DCMR (DIFFERENTIAL CONTROL MODULE REAR) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 34 for schematic and connector information.

Normal Operation and Fault Conditions

The DCMR communicates on the HS-CAN1 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
DCMR

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 54 (40A) is OK.

Q1 CHECK THE DCMR (DIFFERENTIAL CONTROL MODULE REAR) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect DCMR C3396 .

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3396-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to Q2

No	VERIFY BCMC [ BJB ] fuse 54 (40A) is OK. If OK, repair the circuit. If not OK, REFER to the Wiring Diagrams Manual to identify the possible causes of the circuit short.

Q2 CHECK THE DCMR (DIFFERENTIAL CONTROL MODULE REAR) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3396-2 Ground

Is the resistance less than 3 ohms?

Yes

CONNECT the negative battery cable. GO to Q3

No	REPAIR the circuit.

Q3 CHECK THE HS-CAN1 (HIGH-SPEED CONTROLLER AREA NETWORK 1) CIRCUITS BETWEEN THE DCMR (DIFFERENTIAL CONTROL MODULE REAR) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3396-14 C4391A-7

C3396-15 C4391A-20

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to Q4

No	REPAIR the circuit in question.

Q4 CHECK FOR CORRECT DCMR (DIFFERENTIAL CONTROL MODULE REAR) OPERATION

Ignition OFF.

Disconnect and inspect the DCMR connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DCMR connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DCMR .
REFER to: Differential Control Module Rear (DCMR) (205-02 Rear Drive Axle/Differential - Vehicles With: Ford 9.75 Inch Ring Gear, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST R: THE DDM (DRIVER DOOR MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 100 for schematic and connector information.

Normal Operation and Fault Conditions

The DDM communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
DDM

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 182 (60A) is OK.

R1 CHECK THE DDM (DRIVER DOOR MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: DDM C501A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C501A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to R2

No	VERIFY BCMC [ BJB ] fuse 182 (60A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

R2 CHECK THE DDM (DRIVER DOOR MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C501A-2 Ground

Is the resistance less than 3 ohms?

Yes

GO to R3

No	REPAIR the circuit.

R3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE DDM (DRIVER DOOR MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C501A-7 C4391A-3

C501A-6 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to R4

No	REPAIR the circuit in question.

R4 CHECK FOR CORRECT DDM (DRIVER DOOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the DDM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DDM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DDM .
REFER to: Driver Door Module (DDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST S: THE DSM (DRIVER FRONT SEAT MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

The DSM communicates on the MS-CAN . The SCME is integrated with the DSM . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
DSM

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuses 30 (30A) and 38 (30A) are OK.

S1 CHECK THE DSM (DRIVER FRONT SEAT MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: DSM C341C.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341C-2 Ground

C341C-3 Ground

Are the voltages greater than 11 volts?

Yes

GO to S2

No	VERIFY BCMC [ BJB ] fuses 30 (30A) and 38 (30A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

S2 CHECK THE DSM (DRIVER FRONT SEAT MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C341C-4		Ground
C341C-5		Ground
C341C-6		Ground

Are the resistances less than 3 ohms?

Yes

GO to S3

No	REPAIR the circuit in question.

S3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE DSM (DRIVER FRONT SEAT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Ignition OFF.

Disconnect GWM C4391A .

Disconnect: DSM C341A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C341A-5 C4391A-3

C341A-15 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to S4

No	REPAIR the circuit in question.

S4 CHECK FOR CORRECT DSM (DRIVER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the DSM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DSM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST T: THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 134 for schematic and connector information.

Normal Operation and Fault Conditions

The DSP communicates on the HS-CAN3 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
DSP

Visual Inspection and Pre-checks

Verify BCM fuses 4 (20A) and 25 (20A) are OK.

T1 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: DSP C4348C (14 speaker) or C4548C (28 speaker).

Ignition ON.

Measure:
Click to display connectors
14 Speaker

Positive Lead Measurement / Action Negative Lead

C4348C-4 Ground

C4348C-8 Ground

Click to display connectors
28 Speaker

Positive Lead Measurement / Action Negative Lead

C4548C-6 Ground

C4548C-12 Ground

Are the voltages greater than 11 volts?

Yes

GO to T2

No	VERIFY BCM fuses 4 (20A) and 25 (20A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

T2 CHECK THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors
14 Speaker

Positive Lead Measurement / Action Negative Lead

C4348C-1 Ground

C4348C-5 Ground

Click to display connectors
28 Speaker

Positive Lead Measurement / Action Negative Lead

C4548C-3 Ground

C4548C-9 Ground

Are the resistances less than 3 ohms?

Yes

GO to T3

No	REPAIR the circuit in question.

T3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors
14 Speaker

Positive Lead Measurement / Action Negative Lead

C4348C-2 C4391A-9

C4348C-3 C4391A-22

Click to display connectors
28 Speaker

Positive Lead Measurement / Action Negative Lead

C4548C-4 C4391A-9

C4548C-5 C4391A-22

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to T4

No	REPAIR the circuit in question.

T4 CHECK FOR CORRECT DSP (AUDIO DIGITAL SIGNAL PROCESSING MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the DSP connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the DSP connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new DSP . For vehicles equipped with SYNC4,
REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
For vehicles equipped with SYNC+, REFER to: Audio Digital Signal Processing (DSP) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST U: THE FCIM (FRONT CONTROLS INTERFACE MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 55 for schematic and connector information.

Normal Operation and Fault Conditions

The FCIM communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
FCIM

Visual Inspection and Pre-checks

Verify BCM fuse 12 (7.5A) is OK. BCM fuse 12 is a 3-blade fuse containing fuse 13.

U1 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) TERMINATION RESISTANCE

Ignition OFF.

Disconnect negative battery cable.

Disconnect the diagnostic scan tool cable from the remote DLC .

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-3 C4391A-16

Is the resistance between 108 and 132 ohms?

Yes

GO to U3

GO to U2

U2 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE FCIM (FRONT CONTROLS INTERFACE MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: FCIM C2402A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2402A-17 C4391A-3

C2402A-18 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to U5

No	REPAIR the circuit in question.

U3 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Connect negative battery cable.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2402A-26 Ground

Is the voltage greater than 11 volts?

Yes

GO to U4

No	VERIFY BCM fuse 12 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

U4 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2402A-1 Ground

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to U5

No	REPAIR the circuit.

U5 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the FCIM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the FCIM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA If a service article exists for this concern, DISCONTINUE this test and FOLLOW service article instructions. If no service articles address this concern, INSTALL a new FCIM .
REFER to: Front Controls Interface Module (FCIM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST V: THE GSM (GEAR SHIFT MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 29 for schematic and connector information.

Normal Operation and Fault Conditions

The GSM communicates on the HS-CAN2 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
GSM

Visual Inspection and Pre-checks

Verify BCM fuse 7 (10A) is OK. BCM fuse 7 is a 3-blade fuse containing fuse 6.

V1 CHECK THE GSM (GEAR SHIFT MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: GSM C2532.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2532-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to V2

No	VERIFY BCM fuse 7 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

V2 CHECK THE GSM (GEAR SHIFT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2532-9 Ground

Is the resistance less than 3 ohms?

Yes

GO to V3

No	REPAIR the circuit.

V3 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE GSM (GEAR SHIFT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2532-3 C4391A-8

C2532-2 C4391A-21

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to V4

No	REPAIR the circuit in question.

V4 CHECK FOR CORRECT GSM (GEAR SHIFT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the GSM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the GSM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GSM .
REFER to: Gear Shift Module (GSM) (307-05 Automatic Transmission External Controls, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST W: THE HCM (HEADLAMP CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 85 for schematic and connector information.

Normal Operation and Fault Conditions

The HCM communicates on the FD-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
HCM

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 181 (5A) is OK.

W1 CHECK THE HCM (HEADLAMP CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: HCM C2129.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2129-13 Ground

Is the voltage greater than 11 volts?

Yes

GO to W2

No	VERIFY BCMC [ BJB ] fuse 181 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

W2 CHECK THE HCM (HEADLAMP CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2129-16 Ground

Is the resistance less than 3 ohms?

Yes

GO to W3

No	REPAIR the circuit.

W3 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE HCM (HEADLAMP CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2129-4 C4391A-4

C2129-12 C4391A-17

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to W4

No	REPAIR the circuit in question.

W4 CHECK FOR CORRECT HCM (HEADLAMP CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the HCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the HCM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HCM .
REFER to: Headlamp Control Module (HCM) (417-01 Exterior Lighting, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST X: THE HUD (HEAD UP DISPLAY) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 60 for schematic and connector information.

Normal Operation and Fault Conditions

The HUD module communicates on the HS-CAN3 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
HUD module

Visual Inspection and Pre-checks

Verify BCM fuse 3 (7.5A) is OK.

X1 CHECK THE HUD (HEAD UP DISPLAY) MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: HUD module C2877.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2877-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to X2

No	VERIFY BCM fuse 3 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

X2 CHECK THE HUD (HEAD UP DISPLAY) MODULE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2877-8 Ground

Is the resistance less than 3 ohms?

Yes

GO to X3

No	REPAIR the circuit.

X3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE HUD (HEAD UP DISPLAY) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2877-3 C4391A-9

C2877-4 C4391A-22

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to X4

No	REPAIR the circuit in question.

X4 CHECK FOR CORRECT HUD (HEAD UP DISPLAY) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the HUD module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the HUD module connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new HUD module.
REFER to: Head Up Display (HUD) Module (419-03B Collision Warning and Collision Avoidance System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST Y: THE IPC (INSTRUMENT PANEL CLUSTER) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 60 for schematic and connector information.

Normal Operation and Fault Conditions

The IPC communicates on the HS-CAN3 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
IPC

Visual Inspection and Pre-checks

Verify BCM fuse 13 (7.5A) is OK. BCM fuse 13 is a 3-blade fuse containing fuse 12.

Y1 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) TERMINATION RESISTANCE

Ignition OFF.

Disconnect negative battery cable.

Disconnect the diagnostic scan tool cable from the remote DLC .

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-9 C4391A-22

Is the resistance between 108 and 132 ohms?

Yes

GO to Y3

GO to Y2

Y2 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE IPC (INSTRUMENT PANEL CLUSTER) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: IPC C220A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C220A-12 C4391A-9

C220A-13 C4391A-22

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to Y5

No	REPAIR the circuit in question.

Y3 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) VOLTAGE SUPPLY CIRCUIT

Disconnect: IPC C220A.

Connect negative battery cable.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C220A-8 Ground

Is the voltage greater than 11 volts?

Yes

GO to Y4

No	VERIFY BCM fuse 13 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

Y4 CHECK THE IPC (INSTRUMENT PANEL CLUSTER) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C220A-3 Ground

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to Y5

No	REPAIR the circuit.

Y5 CHECK FOR CORRECT IPC (INSTRUMENT PANEL CLUSTER) OPERATION

Ignition OFF.

Disconnect and inspect the IPC connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPC connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPC .
REFER to: Instrument Panel Cluster (IPC) (413-01 Instrumentation, Message Center and Warning Chimes, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST Z: THE IPMA (IMAGE PROCESSING MODULE A) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 145 for schematic and connector information.

Normal Operation and Fault Conditions

The IPMA communicates on the FD-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
IPMA

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 137 (20A) is OK.

Z1 CHECK THE IPMA (IMAGE PROCESSING MODULE A) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: IPMA C242A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C242A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to Z2

No	VERIFY BCMC [ BJB ] fuse 137 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

Z2 CHECK THE IPMA (IMAGE PROCESSING MODULE A) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C242A-13 Ground

Is the resistance less than 3 ohms?

Yes

GO to Z3

No	REPAIR the circuit.

Z3 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE IPMA (IMAGE PROCESSING MODULE A) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Disconnect: IPMA C242B.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C242B-8 C4391A-4

C242B-7 C4391A-17

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to Z4

No	REPAIR the circuit in question.

Z4 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect all the IPMA connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the IPMA connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new IPMA .
REFER to: Image Processing Module A (IPMA) (419-07 Lane Keeping System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AA: THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 46 for schematic and connector information.

Normal Operation and Fault Conditions

The OCS module communicates on the HS-CAN2 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Wiring, terminals and connectors
BCM
OCS module

AA1 CHECK FOR BCM (BODY CONTROL MODULE) NETWORK CONNECTION

Ignition ON.

Using a diagnostic scan tool, carry out the network test.

Does the BCM pass the network test?

Yes

GO to AA2

No	DIAGNOSE a module communication concern. GO to Pinpoint Test N

AA2 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, carry out a BCM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

DIAGNOSE the Diagnostic Trouble Codes (DTCs).
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

GO to AA3

AA3 CHECK THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Wait one minute.

Disconnect: OCS module C3285.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3285-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AA4

No	REPAIR the circuit.

AA4 CHECK THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3285-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to AA5

No	REPAIR the circuit.

AA5 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3285-2 C4391A-8

C3285-3 C4391A-21

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AA6

No	REPAIR the circuit in question.

AA6 CHECK FOR CORRECT OCS (OCCUPANT CLASSIFICATION SYSTEM) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the OCS module connector and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the OCS module connector and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new OCS module.
REFER to: Occupant Classification System (OCS) Sensor (501-20 Supplemental Restraint System) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AB: THE PCM (POWERTRAIN CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 24 for schematic and connector information.

Normal Operation and Fault Conditions

The PCM communicates on the FD-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connectors
PCM

AB1 VERIFY WHETHER OTHER FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) MODULES PASS THE NETWORK TEST

Using a diagnostic scan tool, carry out the network test.

Is the text "pass" or a DTC listed next to any of the following modules (if equipped): ABS module, CMR , HCM , IPMA , PCM , PSCM , TCCM or VDM ?

Yes

If "pass" or a DTC was listed next to the PCM , a network fault is not currently present.
If "pass" or a DTC was listed next to one or more modules other than the PCM , GO to AB2

No	No modules are currently communicating on the FD-CAN . GO to Pinpoint Test B

AB2 VERIFY SECTION 303-14 PINPOINT TEST: UNABLE TO ACTIVATE SELF-TEST/NETWORK COMMUNICATION ERROR

Verify section 303-14 pinpoint test UNABLE TO ACTIVATE SELF-TEST/NETWORK COMMUNICATION ERROR has been carried out.

Has section 303-14 pinpoint test UNABLE TO ACTIVATE SELF-TEST/NETWORK COMMUNICATION ERROR been carried out?

Yes

GO to AB3

No	Refer to section 303-14 Electronic Engine Control D&T pinpoint test: UNABLE TO ACTIVATE SELF-TEST/NETWORK COMMUNICATION ERROR. REFER to: Electronic Engine Controls (303-14 Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS), Diagnosis and Testing).

AB3 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE PCM (POWERTRAIN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Ignition OFF.

Disconnect: PCM C175B.

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C175B-48 C4391A-4

C175B-33 C4391A-17

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AB4

No	REPAIR the circuit in question.

AB4 CHECK FOR CORRECT PCM (POWERTRAIN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the PCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PCM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

Click here to access Guided Routine (PCM).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AC: THE PDM (PASSENGER DOOR MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 100 for schematic and connector information.

Normal Operation and Fault Conditions

The PDM communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
PDM

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 183 (60A) is OK.

AC1 CHECK THE PDM (PASSENGER DOOR MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: PDM C652A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C652A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AC2

No	VERIFY BCMC [ BJB ] fuse 183 (60A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AC2 CHECK THE PDM (PASSENGER DOOR MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C652A-2 Ground

Is the resistance less than 3 ohms?

Yes

GO to AC3

No	REPAIR the circuit.

AC3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE PDM (PASSENGER DOOR MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C652A-7 C4391A-3

C652A-6 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AC4

No	REPAIR the circuit in question.

AC4 CHECK FOR CORRECT PDM (PASSENGER DOOR MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the PDM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PDM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new PDM .
REFER to: Passenger Door Module (PDM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AD: THE PSCM (POWER STEERING CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 43 for schematic and connector information.

Normal Operation and Fault Conditions

The PSCM communicates on the FD-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connectors
PSCM

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuses 22 (10A), 204 (50A) and 213 (50A) are OK.

AD1 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) TERMINATION RESISTANCE

Ignition OFF.

Disconnect negative battery cable.

Disconnect the diagnostic scan tool cable from the remote DLC .

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-4 C4391A-17

Is the resistance between 108 and 132 ohms?

Yes

GO to AD3

GO to AD2

AD2 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE PSCM (POWER STEERING CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect PSCM C1463A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1463A-4 C4391A-4

C1463A-5 C4391A-17

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AD5

No	REPAIR the circuit in question.

AD3 CHECK THE PSCM (POWER STEERING CONTROL MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: PSCM C1463A and C1463B.

Connect negative battery cable.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1463A-1 Ground

C1463A-3 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1463B-1 Ground

Are the voltages greater than 11 volts?

Yes

GO to AD4

No	VERIFY BCMC [ BJB ] fuses 22 (10A), 204 (50A) and 213 (50A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AD4 CHECK THE PSCM (POWER STEERING CONTROL MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1463A-2 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1463B-2 Ground

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AD5

No	REPAIR the circuit in question.

AD5 CHECK FOR CORRECT PSCM (POWER STEERING CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the PSCM connectors and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PSCM connectors and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AE: THE RACM (REAR AUDIO CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 52 for schematic and connector information.

Normal Operation and Fault Conditions

The RACM communicates on the HS-CAN3 .

Possible Sources

Fuse
Wiring, terminals and connector
RACM

Visual Inspection and Pre-checks

Verify BCM fuse 9 (5A) is OK. BCM fuse 9 is a 3-blade fuse containing fuse 8.

AE1 CHECK THE RACM (REAR AUDIO CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: RACM C3511.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3511-6 Ground

Is the voltage greater than 11 volts?

Yes

GO to AE2

No	VERIFY BCM fuse 9 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AE2 CHECK THE RACM (REAR AUDIO CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3511-5 Ground

Is the resistance less than 3 ohms?

Yes

GO to AE3

No	REPAIR the circuit.

AE3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE RACM (REAR AUDIO CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3511-1 C4391A-9

C3511-2 C4391A-22

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AE4

No	REPAIR the circuit in question.

AE4 CHECK FOR CORRECT RACM (REAR AUDIO CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the RACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RACM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA If a service article exists for this concern, DISCONTINUE this test and FOLLOW service article instructions. If no service articles address this concern, INSTALL a new RACM .
REFER to: Rear Audio Control Module (RACM) (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AF: THE RBM (RUNNING BOARD CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 109 for schematic and connector information.

Normal Operation and Fault Conditions

The RBM communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
RBM

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 40 (40A) is OK.

AF1 CHECK THE RBM (RUNNING BOARD CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: RBM C3313B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3313B-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AF2

No	VERIFY BCMC [ BJB ] fuse 40 (40A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AF2 CHECK THE RBM (RUNNING BOARD CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3313B-4 Ground

Is the resistance less than 3 ohms?

Yes

GO to AF3

No	REPAIR the circuit.

AF3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE RBM (RUNNING BOARD CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2431 .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3313B-8 C4391A-3

C3313B-7 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AF4

No	REPAIR the circuit in question.

AF4 CHECK FOR CORRECT RBM (RUNNING BOARD CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the RBM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RBM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RBM .
REFER to: Running Board Control Module (RBM) (501-08 Exterior Trim and Ornamentation, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AG: THE RCM (RESTRAINTS CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 46 for schematic and connector information.

Normal Operation and Fault Conditions

The RCM communicates on the HS-CAN2 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Wiring, terminals and connectors
BCM
RCM

WARNING: Never probe the electrical connectors on airbag, Safety Canopy® or side air curtain assemblies. Failure to follow this instruction may result in the accidental deployment of these assemblies, which increases the risk of serious personal injury or death.

WARNING: Never disassemble or tamper with seat belt deployable components, including pretensioners, load limiters and inflators. Never back probe deployable device electrical connectors. Tampering or back probing may cause an accidental deployment and result in personal injury or death.

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

AG1 CHECK THE RCM (RESTRAINTS CONTROL MODULE) CONNECTION

Ignition OFF.

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect: RCM C310A and C310B.

Are RCM C310A pin 19 and C310B pins 47 and 48 OK?

Yes

GO to AG2

No	INSTALL a new wiring harness. REPOWER the SRS . REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

AG2 CHECK FOR BCM (BODY CONTROL MODULE) NETWORK CONNECTION

Ignition ON.

Using a diagnostic scan tool, carry out the network test.

Does the BCM pass the network test?

Yes

GO to AG3

No	DIAGNOSE a module communication concern. GO to Pinpoint Test N

AG3 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, carry out a BCM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

DIAGNOSE the Diagnostic Trouble Codes (DTCs).
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

GO to AG4

AG4 CHECK THE RCM (RESTRAINTS CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Repower the SRS .
REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C310A-19 Ground

Is the voltage greater than 11 volts?

Yes

GO to AG5

No	REPAIR the circuit.

AG5 CHECK THE RCM (RESTRAINTS CONTROL MODULE) CASE GROUND

Ignition OFF.

Measure the resistance between the RCM case and a good chassis ground.

Is the resistance less than 3 ohms?

Yes

GO to AG6

No	REPAIR the RCM case ground as necessary.

AG6 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE RCM (RESTRAINTS CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Depower the SRS .
REFER to: Supplemental Restraint System (SRS) Depowering (501-20B Supplemental Restraint System, General Procedures).

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C310B-48 C4391A-8

C310B-47 C4391A-21

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AG7

No	REPAIR the circuit in question.

AG7 CHECK FOR CORRECT RCM (RESTRAINTS CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the RCM connectors and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RCM connectors and related in-line connectors. Make sure they seat and latch correctly.

Repower the SRS .
REFER to: Supplemental Restraint System (SRS) Repowering (501-20B Supplemental Restraint System, General Procedures).

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA If a service article exists for this concern, DISCONTINUE this test and FOLLOW service article instructions. If no service articles address this concern, INSTALL a new RCM .
REFER to: Restraints Control Module (RCM) (501-20B Supplemental Restraint System, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AH: THE RFA (REMOTE FUNCTION ACTUATOR) MODULE DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 117 for schematic and connector information.

Normal Operation and Fault Conditions

The RFA module communicates on the HS-CAN4 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
RFA module

Visual Inspection and Pre-checks

Verify BCM fuse 19 (5A) is OK. BCM fuse 19 is a 3-blade fuse containing fuse 20.

AH1 CHECK THE RFA (REMOTE FUNCTION ACTUATOR) MODULE VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: RFA module C3860.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3860-24 Ground

Is the voltage greater than 11 volts?

Yes

GO to AH2

No	VERIFY BCM fuse 19 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AH2 CHECK THE RFA (REMOTE FUNCTION ACTUATOR) MODULE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3860-6 Ground

Is the resistance less than 3 ohms?

Yes

GO to AH3

No	REPAIR the circuit.

AH3 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN THE RFA (REMOTE FUNCTION ACTUATOR) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3860-16 C4391A-10

C3860-17 C4391A-23

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AH4

No	REPAIR the circuit in question.

AH4 CHECK FOR CORRECT RFA (REMOTE FUNCTION ACTUATOR) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the RFA module connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RFA module connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RFA module.
REFER to: Remote Function Actuator (RFA) Module (419-01C Passive Anti-Theft System (PATS) - Vehicles With: Phone as a Key, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AI: THE RGTM (REAR GATE TRUNK MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 109 for schematic and connector information.

Normal Operation and Fault Conditions

The RGTM communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
RGTM

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 41 (30A) and BCM fuse 8 (5A) are OK. BCM fuse 8 is a 3-blade fuse containing fuse 9.

AI1 CHECK THE RGTM (REAR GATE TRUNK MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: RGTM C4174A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4174A-2 Ground

C4174A-6 Ground

Are the voltages greater than 11 volts?

Yes

GO to AI2

No	VERIFY BCMC [ BJB ] fuse 41 (30A) and BCM fuse 8 (5A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AI2 CHECK THE RGTM (REAR GATE TRUNK MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4174A-14 Ground

Is the resistance less than 3 ohms?

Yes

GO to AI3

No	REPAIR the circuit.

AI3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE RGTM (REAR GATE TRUNK MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4174A-4 C4391A-3

C4174A-3 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AI4

No	REPAIR the circuit in question.

AI4 CHECK FOR CORRECT RGTM (REAR GATE TRUNK MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the RGTM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RGTM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RGTM .
REFER to: Rear Gate Trunk Module (RGTM) (501-03 Body Closures, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AJ: THE RTM (RADIO TRANSCEIVER MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 112 for schematic and connector information.

Normal Operation and Fault Conditions

The RTM communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
RTM

Visual Inspection and Pre-checks

Verify BCM fuse 31 (10A) is OK.

AJ1 CHECK THE RTM (RADIO TRANSCEIVER MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: RTM C9026.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C9026-6 Ground

Is the voltage greater than 11 volts?

Yes

GO to AJ2

No	VERIFY BCM fuse 31 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AJ2 CHECK THE RTM (RADIO TRANSCEIVER MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C9026-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to AJ3

No	REPAIR the circuit.

AJ3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE RTM (RADIO TRANSCEIVER MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C9026-4 C4391A-3

C9026-3 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AJ4

No	REPAIR the circuit in question.

AJ4 CHECK FOR CORRECT RTM (RADIO TRANSCEIVER MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the RTM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the RTM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RTM .
REFER to: Radio Transceiver Module (RTM) (419-10 Multifunction Electronic Modules, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AK: THE SCCM (STEERING COLUMN CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 31 for schematic and connector information.

Normal Operation and Fault Conditions

The SCCM communicates on the HS-CAN2 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
SCCM

Visual Inspection and Pre-checks

Verify BCM fuse 13 (7.5A) is OK. BCM fuse 13 is a 3-blade fuse containing fuse 12.

AK1 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) TERMINATION RESISTANCE

Ignition OFF.

Disconnect negative battery cable.

Disconnect the diagnostic scan tool cable from the remote DLC .

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-8 C4391A-21

Is the resistance between 108 and 132 ohms?

Yes

GO to AK3

GO to AK2

AK2 CHECK THE HS-CAN2 (HIGH-SPEED CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE SCCM (STEERING COLUMN CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: SCCM C226A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C226A-5 C4391A-8

C226A-6 C4391A-21

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AK5

No	REPAIR the circuit in question.

AK3 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Connect negative battery cable.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C226A-2 Ground

Is the voltage greater than 11 volts?

Yes

GO to AK4

No	VERIFY BCM fuse 13 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AK4 CHECK THE SCCM (STEERING COLUMN CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C226A-8 Ground

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AK5

No	REPAIR the circuit.

AK5 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCCM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCCM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AL: THE SCMB (PASSENGER FRONT SEAT MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 119 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMB communicates on the MS-CAN . The SCMF is integrated with the SCMB . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
SCMB

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuses 31 (30A) and 37 (30A) are OK.

AL1 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: SCMB C342C.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342C-2 Ground

C342C-3 Ground

Are the voltages greater than 11 volts?

Yes

GO to AL2

No	VERIFY BCMC [ BJB ] fuses 31 (30A) and 37 (30A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AL2 CHECK THE SCMB (PASSENGER FRONT SEAT MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect SCMB C342C .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342C-5 Ground

C342C-6 Ground

Are the resistances less than 3 ohms?

Yes

GO to AL3

No	REPAIR the circuit in question.

AL3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SCMB (PASSENGER FRONT SEAT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Disconnect SCMB C342A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C342A-5 C4391A-3

C342A-15 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AL4

No	REPAIR the circuit in question.

AL4 CHECK FOR CORRECT SCMB (PASSENGER FRONT SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the SCMB connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMB connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AM: THE SEAT CONTROL MODULE C (SCMC) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

The Seat Control Module C (SCMC) communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
Seat Control Module C (SCMC)

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 59 (20A) is OK.

AM1 CHECK THE SEAT CONTROL MODULE C (SCMC) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: Seat Control Module C (SCMC) C3721.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3721-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AM2

No	VERIFY BCMC [ BJB ] fuse 59 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AM2 CHECK THE SEAT CONTROL MODULE C (SCMC) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3721-16 Ground

Is the resistance less than 3 ohms?

Yes

GO to AM3

No	REPAIR the circuit.

AM3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SEAT CONTROL MODULE C (SCMC) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3721-5 C4391A-3

C3721-4 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AM4

No	REPAIR the circuit in question.

AM4 CHECK FOR CORRECT SEAT CONTROL MODULE C (SCMC) OPERATION

Ignition OFF.

Disconnect and inspect the Seat Control Module C (SCMC) connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the Seat Control Module C (SCMC) connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new Driver Second Row Seat Power Lumbar Assembly.
REFER to: Second Row Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10B Second Row Seats, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AN: THE SEAT CONTROL MODULE D (SCMD) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

The Seat Control Module D (SCMD) communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
Seat Control Module D (SCMD)

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 59 (20A) is OK.

AN1 CHECK THE SEAT CONTROL MODULE D (SCMD) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: Seat Control Module D (SCMD) C3720.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3720-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AN2

No	VERIFY BCMC [ BJB ] fuse 59 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AN2 CHECK THE SEAT CONTROL MODULE D (SCMD) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3720-16 Ground

Is the resistance less than 3 ohms?

Yes

GO to AN3

No	REPAIR the circuit.

AN3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SEAT CONTROL MODULE D (SCMD) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3720-5 C4391A-3

C3720-4 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AN4

No	REPAIR the circuit in question.

AN4 CHECK FOR CORRECT SEAT CONTROL MODULE D (SCMD) OPERATION

Ignition OFF.

Disconnect and inspect the Seat Control Module D (SCMD) connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the Seat Control Module D (SCMD) connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new Passenger Second Row Seat Power Lumbar Assembly.
REFER to: Second Row Seat Power Lumbar Assembly - Vehicles With: Multi-Contour Seats (501-10B Second Row Seats, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AO: THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMG communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
SCMG

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 134 (20A) is OK.

AO1 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: SCMG C3385.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3385-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AO3

No	VERIFY BCMC [ BJB ] fuse 134 (20A) is OK. If OK, GO to AO2 If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AO2 CHECK THE MULTI-CONTOUR SEAT RELAY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect BCMC [ BJB ] C1035C .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1035C-50 C3385-1

Is the resistance less than 3 ohms?

Yes

REFER to the Wiring Diagrams manual to identify the possible voltage supply circuit concern.

No	REPAIR the open circuit.

AO3 CHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3385-16 Ground

Is the resistance less than 3 ohms?

Yes

GO to AO4

No	REPAIR the circuit.

AO4 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3385-5 C4391A-3

C3385-4 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AO5

No	REPAIR the circuit in question.

AO5 CHECK FOR CORRECT SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCMG connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMG connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMG .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10 Front Seats) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AP: THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 123 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMH communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
SCMH

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 134 (20A) is OK.

AP1 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: SCMH C3386.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3386-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AP3

No	VERIFY BCMC [ BJB ] fuse 134 (20A) is OK. If OK, GO to AP2 If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AP2 CHECK THE MULTI-CONTOUR SEAT RELAY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect BCMC [ BJB ] C1035C .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C1035C-50 C3386-1

Is the resistance less than 3 ohms?

Yes

REFER to the Wiring Diagrams manual to identify the possible voltage supply circuit concern.

No	REPAIR the circuit.

AP3 CHECK THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3386-16 Ground

Is the resistance less than 3 ohms?

Yes

GO to AP4

No	REPAIR the circuit.

AP4 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C3386-5 C4391A-3

C3386-4 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AP5

No	REPAIR the circuit in question.

AP5 CHECK FOR CORRECT SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCMH connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMH connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMH .
REFER to: Driver Multi-Contour Seat Module [SCMG] (501-10 Front Seats) .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AQ: THE SCMJ (POWER FOLD SEAT MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 120 for schematic and connector information.

Normal Operation and Fault Conditions

The SCMJ communicates on the MS-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
SCMJ

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuse 73 (50A) is OK.

AQ1 CHECK THE SCMJ (POWER FOLD SEAT MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: SCMJ C4250A.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4250A-4 Ground

Is the voltage greater than 11 volts?

Yes

GO to AQ2

No	VERIFY BCMC [ BJB ] fuse 73 (50A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AQ2 CHECK THE SCMJ (POWER FOLD SEAT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4250A-1 Ground

Is the resistance less than 3 ohms?

Yes

GO to AQ3

No	REPAIR the circuit.

AQ3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE SCMJ (POWER FOLD SEAT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: SCMJ C4250D.

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4250D-1 C4391A-3

C4250D-9 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AQ4

No	REPAIR the circuit in question.

AQ4 CHECK FOR CORRECT SCMJ (POWER FOLD SEAT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the SCMJ connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the SCMJ connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new SCMJ .
REFER to: Power Fold Seat Module (PFSM) (501-10C Third Row Seats, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AR: THE TCCM (TRANSFER CASE CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 34 for schematic and connector information.

Normal Operation and Fault Conditions

The TCCM communicates on the FD-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
TCCM

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuses 64 (25A) and 82 (25A) are OK.

AR1 CHECK THE TCCM (TRANSFER CASE CONTROL MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: TCCM C2371B.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2371B-10 Ground

C2371B-7 Ground

Are the voltages greater than 11 volts?

Yes

GO to AR2

No	VERIFY BCMC [ BJB ] fuses 64 (25A) and 82 (25A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AR2 CHECK THE TCCM (TRANSFER CASE CONTROL MODULE) GROUND CIRCUITS FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2371B-3 Ground

C2371B-4 Ground

Are the resistances less than 3 ohms?

Yes

GO to AR3

No	REPAIR the circuit in question.

AR3 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE TCCM (TRANSFER CASE CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: TCCM C2371A.

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2371A-10 C4391A-4

C2371A-20 C4391A-17

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AR4

No	REPAIR the circuit in question.

AR4 CHECK FOR CORRECT TCCM (TRANSFER CASE CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the TCCM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the TCCM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new TCCM .
REFER to: Transfer Case Control Module (TCCM) (307-07A Four-Wheel Drive Systems, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AS: THE TCU (TELEMATIC CONTROL UNIT MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 134 for schematic and connector information.

Normal Operation and Fault Conditions

The TCU communicates on the HS-CAN4 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
TCU

Visual Inspection and Pre-checks

Verify BCM fuse 8 (5A) is OK. BCM fuse 8 is a 3-blade fuse containing fuse 9.

AS1 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) TERMINATION RESISTANCE

Ignition OFF.

Disconnect negative battery cable.

Disconnect the diagnostic scan tool cable from the remote DLC .

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-10 C4391A-23

Is the resistance between 108 and 132 ohms?

Yes

GO to AS3

GO to AS2

AS2 CHECK THE HS-CAN4 (HIGH-SPEED CONTROLLER AREA NETWORK 4) CIRCUITS BETWEEN THE TCU (TELEMATIC CONTROL UNIT MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect TCU C2494A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2494A-10 C4391A-10

C2494A-20 C4391A-23

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AS5

No	REPAIR the circuit in question.

AS3 CHECK THE TCU (TELEMATIC CONTROL UNIT MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: TCU C2494A.

Connect negative battery cable.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2494A-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AS4

No	VERIFY BCM fuse 8 (5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AS4 CHECK THE TCU (TELEMATIC CONTROL UNIT MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect negative battery cable.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2494A-9 Ground

Is the resistance less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AS5

No	REPAIR the circuit.

AS5 CHECK FOR CORRECT TCU (TELEMATIC CONTROL UNIT MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the TCU connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the TCU connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW service article instructions. If no service articles address this concern, INSTALL a new TCU . For vehicles equipped with SYNC4,
REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).
For vehicles equipped with SYNC+, REFER to: Telematics Control Unit (TCU) Module (415-00 Information and Entertainment System - General Information - Vehicles With: SYNC 4, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AT: THE TRM (TRAILER MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 95 for schematic and connector information.

Normal Operation and Fault Conditions

The TRM communicates on the HS-CAN3 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
TRM

Visual Inspection and Pre-checks

Verify BCMC [ BJB ] fuses 42 (30A), 91 (20A) and 107 (30A) are OK.

AT1 CHECK THE TRM (TRAILER MODULE) VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: TRM C2498C and C2498F.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2498C-11 Ground

C2498C-13 Ground

Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2498F-14 Ground

Are the voltages greater than 11 volts?

Yes

GO to AT2

No	VERIFY BCMC [ BJB ] fuses 42 (30A), 91 (20A) and 107 (30A) are OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AT2 CHECK THE TRM (TRAILER MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2498F-12 Ground

Is the resistance less than 3 ohms?

Yes

GO to AT3

No	REPAIR the circuit.

AT3 CHECK THE MS-CAN (MEDIUM SPEED-CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE TRM (TRAILER MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C2498C-6 C4391A-3

C2498C-7 C4391A-16

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AT4

No	REPAIR the circuit in question.

AT4 CHECK FOR CORRECT TRM (TRAILER MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all the TRM connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the TRM connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new TRM .
REFER to: Trailer Module (TRM) (417-01 Exterior Lighting, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AU: THE VDM (VEHICLE DYNAMICS CONTROL MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 41 for schematic and connector information.

Normal Operation and Fault Conditions

The VDM communicates on the FD-CAN . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Wiring, terminals and connector
BCM
VDM

AU1 CHECK FOR BCM (BODY CONTROL MODULE) NETWORK CONNECTION

Ignition ON.

Using a diagnostic scan tool, carry out the network test.

Does the BCM pass the network test?

Yes

GO to AU2

No	DIAGNOSE a module communication concern. GO to Pinpoint Test N

AU2 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, carry out a BCM self-test.

Are any Diagnostic Trouble Codes (DTCs) recorded?

Yes

DIAGNOSE the Diagnostic Trouble Codes (DTCs).
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

GO to AU3

AU3 CHECK THE VDM (VEHICLE DYNAMICS CONTROL MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: VDM C4396.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4396-M1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AU4

No	REPAIR the circuit.

AU4 CHECK THE VDM (VEHICLE DYNAMICS CONTROL MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4396-M4 Ground

Is the resistance less than 3 ohms?

Yes

GO to AU5

No	REPAIR the circuit.

AU5 CHECK THE FD-CAN (FLEXIBLE DATA RATE CONTROLLER AREA NETWORK) CIRCUITS BETWEEN THE VDM (VEHICLE DYNAMICS CONTROL MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect: GWM C4391A.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4396-L3 C4391A-4

C4396-M3 C4391A-17

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AU6

No	REPAIR the circuit in question.

AU6 CHECK FOR CORRECT VDM (VEHICLE DYNAMICS CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the VDM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the VDM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new VDM .
REFER to: Vehicle Dynamics Control Module (VDM) (204-05 Vehicle Dynamic Suspension, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AV: THE WACM (WIRELESS ACCESSORY CHARGING MODULE) DOES NOT RESPOND TO THE DIAGNOSTIC SCAN TOOL

Refer to Wiring Diagrams Cell 14 for schematic and connector information. Refer to Wiring Diagrams Cell 44 for schematic and connector information.

Normal Operation and Fault Conditions

The WACM communicates on the HS-CAN3 . REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

Possible Sources

Fuse
Wiring, terminals and connector
WACM

Visual Inspection and Pre-checks

Verify BCM fuse 3 (7.5A) is OK.

AV1 CHECK THE WACM (WIRELESS ACCESSORY CHARGING MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

Ignition OFF.

Disconnect: WACM C390.

Ignition ON.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C390-1 Ground

Is the voltage greater than 11 volts?

Yes

GO to AV2

No	VERIFY BCM fuse 3 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

AV2 CHECK THE WACM (WIRELESS ACCESSORY CHARGING MODULE) GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C390-5 Ground

Is the resistance less than 3 ohms?

Yes

GO to AV3

No	REPAIR the circuit.

AV3 CHECK THE HS-CAN3 (HIGH-SPEED CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE WACM (WIRELESS ACCESSORY CHARGING MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C4391A .

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C390-8 C4391A-9

C390-7 C4391A-22

Are the resistances less than 3 ohms?

Yes

CONNECT all disconnected connectors. GO to AV4

No	REPAIR the circuit in question.

AV4 CHECK FOR CORRECT WACM (WIRELESS ACCESSORY CHARGING MODULE) OPERATION

Ignition OFF.

Disconnect and inspect the WACM connector.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the WACM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new WACM .
REFER to: Wireless Accessory Charging Module (WACM) (414-06 Accessory Charging, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AW: U0001:09

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GWM U0001:09	High Speed CAN Communication Bus: Component Failures	The module could not communicate on a network at a point in time. The fault is not currently present since the module had to communicate with the diagnostic scan tool to report this DTC .

Possible Sources

Intermittent fault with the HS-CAN .
GWM

AW1 RETRIEVE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: The module was unable to communicate on the network at a point in time. The fault is not currently present since the module had to communicate with the diagnostic scan tool to report this Diagnostic Trouble Code (DTC).

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the GWM .

Wait at least 10 seconds.

Using a diagnostic scan tool, carry out the GWM self-test.

Is the DTC still present?

Yes

REFER to the appropriate HS-CAN does not communicate.

No	The system is operating correctly at this time.

PINPOINT TEST AX: U0214:00

Normal Operation and Fault Conditions

The GWM communicates with the RFA module over the HS-CAN4 . If messages are missing or not received from the RFA module, the phone as a key feature may not operate correctly. REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GWM U0214:00	Lost Communication With Remote Function Actuation Module: No Sub Type Information	Sets in continuous memory when the GWM detects network messages are missing from the RFA module for more than 5 seconds.

Possible Sources

Network communication concern
GWM concern
RFA module

AX1 VERIFY THE CONCERN

Ignition ON.

Verify an observable symptom present.

Is an observable symptom present?

Yes

GO to AX2

No	CLEAR the DTC . The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AX2 CHECK THE NETWORK COMMUNICATION

Using a diagnostic scan tool, carry out the network test.

Does the RFA module pass the network test?

Yes

GO to AX3

No	GO to Pinpoint Test AH

AX3 CHECK FOR NON-NETWORK DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, carry out the self-test for the module in question (GWM ) setting the DTC .

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

DIAGNOSE all non-network Diagnostic Trouble Codes (DTCs) first. REFER to the appropriate DTC Chart in this section.

GO to AX4

AX4 CHECK FOR NON-NETWORK RFA (REMOTE FUNCTION ACTUATOR) MODULE DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, carry out the RFA module self-test.

Are any non-network Diagnostic Trouble Codes (DTCs) present?

Yes

REFER to: Passive Anti-Theft System (PATS) (419-01C Passive Anti-Theft System (PATS) - Vehicles With: Phone as a Key, Diagnosis and Testing).

GO to AX5

AX5 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0214:00

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the module in question (GWM ) setting the DTC .

Ignition OFF.

Ignition ON.

Wait 10 seconds.

Using a diagnostic scan tool, carry out the self-test for the module in question setting the DTC .

Is DTC U0214:00 still present?

Yes

GO to AX6

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

AX6 CHECK FOR OTHER CAUSES OF NETWORK COMMUNICATION CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

Check the vehicle service history for recent service actions related to the RFA module and the module in question ( GWM ) setting the DTC . If recent service history is found:
- verify correct replacement module was installed
  - vehicle parts build list may be used to verify correct part fitment
- verify the configuration of replacement module was correct
  - re-configure module using as-built data if prior configuration is suspect
- verify the module was not obtained from a like vehicle and installed into vehicle with concern
  - return the swapped module to source vehicle and obtain new replacement module

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to AX7

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

AX7 CHECK FOR CORRECT RFA (REMOTE FUNCTION ACTUATOR) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the RFA module connector.

Repair:
- corrosion (install new connectors or terminals - clean module pins)
- damaged or bent pins - install new terminals pins
- pushed-out pins - install new pins as necessary

Reconnect the RFA module connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new RFA module.
REFER to: Remote Function Actuator (RFA) Module (419-01C Passive Anti-Theft System (PATS) - Vehicles With: Phone as a Key, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST AY: U1A01:00

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GWM U1A01:00	Communication Link: No Sub Type Information	Sets in the GWM when communication cannot be established.

Possible Sources

AY1 RETRIEVE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) for the GWM .

Wait at least 10 seconds.

Using a diagnostic scan tool, carry out the GWM self-test.

Is the DTC still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time.

PINPOINT TEST AZ: U2100:00 OR U2200:00

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GWM U2100:00	Initial Configuration Not Complete: No Sub Type Information	Sets due to incomplete or incorrect PMI procedures.
GWM U2200:00	Control Module Configuration Memory Corrupt: No Sub Type Information	Sets in the GWM when module data corruption is identified.

Possible Sources

Incomplete or incorrect PMI procedures.
GWM

AZ1 RETRIEVE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Check vehicle service history for recent service actions related to the GWM .

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).

Wait 10 seconds.

Using a diagnostic scan tool, carry out the GWM self-test.

Is DTC U2100:00 or U2200:00 recorded?

Yes

GO to AZ2

No	The system is operating correctly at this time. The DTC may have been falsely set by the GWM causing the signal to momentarily stop and set the DTC .

AZ2 INSTALL GWM (GATEWAY MODULE A) PMI (PROGRAMMABLE MODULE INSTALLATION)

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).

Carry out GWM PMI .

Using a diagnostic scan tool, carry out the GWM self-test.

Is DTC U2100:00 or U2200:00 recorded?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time.

PINPOINT TEST BA: U3000:04, U3000:43 OR U3000:49

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GWM U3000:04	Control Module: System Internal Failures	Sets in the GWM when a general system failure is detected.
GWM U3000:43	Control Module: Special Memory Failure	Sets in the GWM when a failure is detected in the special memory.
GWM U3000:49	Control Module: Internal Electronic Failure	Sets in the GWM when an internal failure is detected.

Possible Sources

BA1 RETRIEVE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).

Wait 10 seconds.

Using a diagnostic scan tool, carry out the GWM self-test.

Is DTC U3000:04, U3000:43 or U3000:49 recorded?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time.

PINPOINT TEST BB: U3000:57

Normal Operation and Fault Conditions

This DTC indicates a programming update has occurred and should be disregarded as no fault is present. REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GWM U3000:57	Control Module: Invalid/Incompatible Software Component	Sets when the GWM detects a software update.

Possible Sources

Software updated

Diagnostic steps are not provided for this symptom or DTC. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

PINPOINT TEST BC: U3003:16

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The GWM monitors the supplied voltage and sets a DTC if it falls below a threshold. REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GWM U3003:16	Battery Voltage: Circuit Voltage Below Threshold	Sets in continuous memory and during the on-demand self-test when the GWM detects the supply voltage below 10 volts.

Possible Sources

Previous low battery voltage
Wiring, terminals, or connectors
Charging system concern
GWM

BC1 RECHECK FOR LOW VOLTAGE DTC (DIAGNOSTIC TROUBLE CODE)

Ignition ON.

Using a diagnostic scan tool, clear the low voltage DTC .

Wait 10 seconds.

Using a diagnostic scan tool, carry out the GWM self-test.

Is DTC U3003:16 still present?

Yes

GO to BC2

No	The system is operating correctly at this time. The DTC may have been set due to a previous low battery voltage condition.

BC2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, carry out the PCM KOEO and KOER self-tests.

Are any voltage-related Diagnostic Trouble Codes (DTCs) present?

Yes

DIAGNOSE the charging system concern.
REFER to: Charging System - 3.5L EcoBoost (272kW/370PS) (414-00 Charging System - General Information, Diagnosis and Testing).

GO to BC3

BC3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE

Ignition OFF.

Check the battery condition and verify the battery is fully charged.
REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

Is the battery OK and fully charged?

Yes

GO to BC4

No	DIAGNOSE the battery. REFER to: Battery (414-01 Battery, Mounting and Cables, Diagnosis and Testing).

BC4 COMPARE THE GWM (GATEWAY MODULE A) VOLTAGE SUPPLY PID (PARAMETER IDENTIFICATION) TO THE BATTERY VOLTAGE

Ignition ON.

Measure and record the battery voltage.

Using a diagnostic scan tool, monitor the GWM voltage supply PID :
- GWM :
  Access the GWM and monitor the VPWR (V) PID

Is the voltage reading within 0.2 volt of the recorded battery voltage?

Yes

GO to BC8

GO to BC5

BC5 CHECK THE GWM (GATEWAY MODULE A) VOLTAGE SUPPLY CIRCUIT FOR HIGH RESISTANCE

Ignition OFF.

Disconnect GWM C4391A .

Ignition ON.

Measure and record the battery voltage.

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-13 Ground

Is the voltage reading within 0.2 volt of the recorded battery voltage?

Yes

GO to BC6

No	REPAIR the circuit for high resistance.

BC6 CHECK THE GWM (GATEWAY MODULE A) GROUND CIRCUIT FOR HIGH RESISTANCE

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-13 C4391A-14

Is the voltage reading within 0.2 volt of the recorded battery voltage?

Yes

GO to BC7

No	REPAIR the circuit for high resistance.

BC7 CHECK THE GWM (GATEWAY MODULE A) CASE GROUND CIRCUIT FOR HIGH RESISTANCE

Measure:
Click to display connectors

Positive Lead Measurement / Action Negative Lead

C4391A-13 C4391A-Case

Is the voltage reading within 0.2 volt of the recorded battery voltage?

Yes

GO to BC8

No	REPAIR the GWM case ground as necessary.

BC8 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connectors or terminals - clean module pins)
- damaged or bent pins - install new terminals pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST BD: U3003:17

Refer to Wiring Diagrams Cell 14 for schematic and connector information.

Normal Operation and Fault Conditions

The GWM monitors the supplied voltage and sets a DTC if it rises above a threshold. REFER to: Controller Area Network (CAN) Module Communications Network - System Operation and Component Description (418-00A Controller Area Network (CAN) Module Communications Network, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
GWM U3003:17	Battery Voltage: Circuit Voltage Above Threshold	Sets in continuous memory and during the on-demand self-test when the GWM detects the supply voltage is greater than 16 volts.

Possible Sources

Charging system concern
GWM

NOTE: DTC U3003:17 may be stored in the module memory due to past battery charging or vehicle jump starting events.

BD1 CHECK FOR HIGH VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS) SET IN OTHER MODULES

Ignition ON.

Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs).

Are any charging or over-voltage related Diagnostic Trouble Codes (DTCs) present in multiple modules?

Yes

DIAGNOSE the overcharging condition.
REFER to: Charging System - 3.5L EcoBoost (272kW/370PS) (414-00 Charging System - General Information, Diagnosis and Testing).

GO to BD2

BD2 CHECK THE BATTERY VOLTAGE WITH THE ENGINE RUNNING

Turn off all interior/exterior lights and accessories.

Start and run the engine at approximately 2,000 RPM for 3 minutes while monitoring the battery voltage.

Does the battery voltage rise to 15.5 volts or higher?

Yes

DIAGNOSE the overcharging condition.
REFER to: Charging System - 3.5L EcoBoost (272kW/370PS) (414-00 Charging System - General Information, Diagnosis and Testing).

GO to BD3

BD3 RECHECK FOR THE HIGH VOLTAGE DTC (DIAGNOSTIC TROUBLE CODE)

Ignition OFF.

Ignition ON.

Using a diagnostic scan tool, clear the GWM DTC .

Wait 10 seconds.

Using a diagnostic scan tool, carry out the GWM self-test.

Is DTC U3003:17 still present?

Yes

GO to BD4

No	The system is operating correctly at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

BD4 CHECK FOR CORRECT GWM (GATEWAY MODULE A) OPERATION

Ignition OFF.

Disconnect and inspect the GWM connector.

Repair:
- corrosion (install new connectors or terminals - clean module pins)
- damaged or bent pins - install new terminals pins
- pushed-out pins - install new pins as necessary

Reconnect the GWM connector. Make sure it seats and latches correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes

CHECK OASIS for any applicable service articles: TSB , GSB , SSM or FSA . If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no service articles address this concern, INSTALL a new GWM .
REFER to: Gateway Module A (GWM) (418-00A Controller Area Network (CAN) Module Communications Network, Removal and Installation).

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

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